diff --git a/jetson/ros2_ws/src/saltybot_bringup/config/profiles/demo.yaml b/jetson/ros2_ws/src/saltybot_bringup/config/profiles/demo.yaml
new file mode 100644
index 0000000..001ebc9
--- /dev/null
+++ b/jetson/ros2_ws/src/saltybot_bringup/config/profiles/demo.yaml
@@ -0,0 +1,83 @@
+# Issue #506: Demo Launch Profile
+# Optimized for demonstrations: tricks, dancing, social interactions, tight maneuvering
+#
+# Parameters:
+#   - Max speed: 0.3 m/s (controlled for safe demo performance)
+#   - Geofence: tight (demo area boundary)
+#   - GPS: disabled (indoor demo focus)
+#   - Costmap inflation: aggressive (enhanced obstacle awareness)
+#   - Recovery behaviors: quick recovery from collisions
+#   - Tricks: all enabled (spin, dance, nod, celebrate, shy)
+#   - Social features: enhanced (face emotion, audio response)
+
+profile: demo
+description: "Demo mode with tricks, dancing, and social features (0.3 m/s)"
+
+# ── Navigation & Velocity ──────────────────────────────────────────────────────
+max_linear_vel: 0.3            # m/s — controlled for safe trick execution
+max_angular_vel: 0.8           # rad/s — agile rotation for tricks
+max_vel_theta: 0.8             # rad/s — Nav2 controller (agile)
+
+# ── Costmap Configuration ──────────────────────────────────────────────────────
+costmap:
+  inflation_radius: 0.70       # 0.35m robot + 0.35m padding (enhanced safety)
+  cost_scaling_factor: 12.0    # slightly higher cost scaling for obstacle avoidance
+  obstacle_layer:
+    inflation_radius: 0.70
+    clearing: true
+    marking: true
+
+# ── Behavior Server (Recovery) ─────────────────────────────────────────────────
+behavior_server:
+  spin:
+    max_rotational_vel: 2.0    # fast spins for tricks
+    min_rotational_vel: 0.5
+    rotational_acc_lim: 3.5    # higher acceleration for trick execution
+  backup:
+    max_linear_vel: 0.12       # conservative backup
+    min_linear_vel: -0.12
+    linear_acc_lim: 2.5
+    max_distance: 0.25         # 25cm max backup distance (safety first)
+  wait:
+    wait_duration: 1000        # 1 second waits (quick recovery)
+
+# ── Geofence (if enabled) ──────────────────────────────────────────────────────
+geofence:
+  enabled: true
+  mode: "tight"                # tight geofence for controlled demo area
+  radius_m: 3.0                # 3m radius (small demo arena)
+
+# ── SLAM Configuration ─────────────────────────────────────────────────────────
+slam:
+  enabled: true
+  mode: "rtabmap"              # RTAB-Map for demo space mapping
+  gps_enabled: false            # no GPS in demo mode
+
+# ── Trick Behaviors (Social) ───────────────────────────────────────────────────
+tricks:
+  enabled: true
+  available: ["spin", "dance", "nod", "celebrate", "shy"]
+  trick_cooldown_sec: 2.0      # slightly longer cooldown for safe sequencing
+  max_trick_duration_sec: 5.0  # 5 second max trick duration
+
+# ── Social Features ────────────────────────────────────────────────────────────
+social:
+  face_emotion_enabled: true     # enhanced emotional expression
+  audio_response_enabled: true   # respond with audio for demo engagement
+  greeting_trigger_enabled: true # greet approaching humans
+  personality: "friendly"        # social personality preset
+
+# ── Person Follower ────────────────────────────────────────────────────────────
+follower:
+  follow_distance: 1.0          # closer following for demo engagement
+  max_linear_vel: 0.3
+  min_linear_vel: 0.05
+  kp_linear: 0.6                # higher proportional gain for responsiveness
+  kp_angular: 0.4               # moderate angular gain for agility
+  following_enabled: true
+
+# ── Scenario Presets ──────────────────────────────────────────────────────────
+scenario:
+  preset: "public_demo"         # optimized for crowds and public spaces
+  collision_tolerance: "low"    # abort tricks on any obstacle
+  speed_limit_enforcement: "strict"  # strictly enforce max_linear_vel
diff --git a/jetson/ros2_ws/src/saltybot_bringup/config/profiles/indoor.yaml b/jetson/ros2_ws/src/saltybot_bringup/config/profiles/indoor.yaml
new file mode 100644
index 0000000..6b6ea9f
--- /dev/null
+++ b/jetson/ros2_ws/src/saltybot_bringup/config/profiles/indoor.yaml
@@ -0,0 +1,66 @@
+# Issue #506: Indoor Launch Profile
+# Optimized for controlled indoor environments: tight spaces, no GPS, conservative speed
+#
+# Parameters:
+#   - Max speed: 0.2 m/s (tight indoor corridors)
+#   - Geofence: tight (e.g., single room: ~5m radius)
+#   - GPS: disabled
+#   - Costmap inflation: aggressive (0.55m → 0.65m for safety)
+#   - Recovery behaviors: conservative (short spin/backup distances)
+#   - Tricks: enabled (safe for indoor demo)
+
+profile: indoor
+description: "Tight indoor spaces, no GPS, conservative speed (0.2 m/s)"
+
+# ── Navigation & Velocity ──────────────────────────────────────────────────────
+max_linear_vel: 0.2            # m/s — tight indoor corridors
+max_angular_vel: 0.3           # rad/s — conservative rotation
+max_vel_theta: 0.3             # rad/s — Nav2 controller (same as above)
+
+# ── Costmap Configuration ──────────────────────────────────────────────────────
+costmap:
+  inflation_radius: 0.65       # 0.35m robot + 0.30m padding (aggressive for safety)
+  cost_scaling_factor: 10.0
+  obstacle_layer:
+    inflation_radius: 0.65
+    clearing: true
+    marking: true
+
+# ── Behavior Server (Recovery) ─────────────────────────────────────────────────
+behavior_server:
+  spin:
+    max_rotational_vel: 1.0
+    min_rotational_vel: 0.4
+    rotational_acc_lim: 3.2
+  backup:
+    max_linear_vel: 0.10        # very conservative backup
+    min_linear_vel: -0.10
+    linear_acc_lim: 2.5
+    max_distance: 0.3           # 30cm max backup distance
+  wait:
+    wait_duration: 2000         # 2 second waits
+
+# ── Geofence (if enabled) ──────────────────────────────────────────────────────
+geofence:
+  enabled: true
+  mode: "tight"                 # tight geofence for single-room operation
+  radius_m: 5.0                 # 5m radius max (typical room size)
+
+# ── Trick Behaviors (Social) ───────────────────────────────────────────────────
+tricks:
+  enabled: true
+  available: ["spin", "dance", "nod", "celebrate", "shy"]
+
+# ── SLAM Configuration ─────────────────────────────────────────────────────────
+slam:
+  enabled: true
+  mode: "rtabmap"              # RTAB-Map SLAM for indoor mapping
+  gps_enabled: false            # no GPS indoors
+
+# ── Person Follower ────────────────────────────────────────────────────────────
+follower:
+  follow_distance: 1.5          # meters
+  max_linear_vel: 0.2
+  min_linear_vel: 0.05
+  kp_linear: 0.5                # proportional gain for linear velocity
+  kp_angular: 0.3               # proportional gain for angular velocity
diff --git a/jetson/ros2_ws/src/saltybot_bringup/config/profiles/outdoor.yaml b/jetson/ros2_ws/src/saltybot_bringup/config/profiles/outdoor.yaml
new file mode 100644
index 0000000..2d42e08
--- /dev/null
+++ b/jetson/ros2_ws/src/saltybot_bringup/config/profiles/outdoor.yaml
@@ -0,0 +1,72 @@
+# Issue #506: Outdoor Launch Profile
+# Optimized for outdoor environments: wide spaces, GPS-enabled, moderate speed
+#
+# Parameters:
+#   - Max speed: 0.5 m/s (open outdoor terrain)
+#   - Geofence: wide (e.g., park boundary: ~20m radius)
+#   - GPS: enabled via outdoor_nav with EKF fusion
+#   - Costmap inflation: moderate (0.55m standard)
+#   - Recovery behaviors: moderate distances
+#   - Tricks: enabled (safe for outdoor social features)
+
+profile: outdoor
+description: "Wide outdoor spaces, GPS-enabled navigation, moderate speed (0.5 m/s)"
+
+# ── Navigation & Velocity ──────────────────────────────────────────────────────
+max_linear_vel: 0.5            # m/s — open outdoor terrain
+max_angular_vel: 0.5           # rad/s — moderate rotation
+max_vel_theta: 0.5             # rad/s — Nav2 controller (same as above)
+
+# ── Costmap Configuration ──────────────────────────────────────────────────────
+costmap:
+  inflation_radius: 0.55       # 0.35m robot + 0.20m padding (standard)
+  cost_scaling_factor: 10.0
+  obstacle_layer:
+    inflation_radius: 0.55
+    clearing: true
+    marking: true
+
+# ── Behavior Server (Recovery) ─────────────────────────────────────────────────
+behavior_server:
+  spin:
+    max_rotational_vel: 1.5
+    min_rotational_vel: 0.4
+    rotational_acc_lim: 3.2
+  backup:
+    max_linear_vel: 0.15        # moderate backup speed
+    min_linear_vel: -0.15
+    linear_acc_lim: 2.5
+    max_distance: 0.5           # 50cm max backup distance
+  wait:
+    wait_duration: 2000         # 2 second waits
+
+# ── Geofence (if enabled) ──────────────────────────────────────────────────────
+geofence:
+  enabled: true
+  mode: "wide"                  # wide geofence for outdoor exploration
+  radius_m: 20.0                # 20m radius max (park boundary)
+
+# ── SLAM Configuration ─────────────────────────────────────────────────────────
+slam:
+  enabled: false                # no SLAM outdoors — use GPS instead
+  mode: "gps"
+  gps_enabled: true             # GPS nav via outdoor_nav + EKF
+
+# ── Outdoor Navigation (EKF + GPS) ────────────────────────────────────────────
+outdoor_nav:
+  enabled: true
+  use_gps: true
+  ekf_config: "ekf_outdoor.yaml"
+
+# ── Person Follower ────────────────────────────────────────────────────────────
+follower:
+  follow_distance: 2.0          # meters (slightly further for outdoor)
+  max_linear_vel: 0.5
+  min_linear_vel: 0.05
+  kp_linear: 0.4                # slightly lower gain for stability
+  kp_angular: 0.25              # slightly lower gain for outdoor
+
+# ── Trick Behaviors (Social) ───────────────────────────────────────────────────
+tricks:
+  enabled: true
+  available: ["spin", "dance", "celebrate"]  # subset safe for outdoor
diff --git a/jetson/ros2_ws/src/saltybot_bringup/saltybot_bringup/profile_loader.py b/jetson/ros2_ws/src/saltybot_bringup/saltybot_bringup/profile_loader.py
new file mode 100644
index 0000000..abfbe43
--- /dev/null
+++ b/jetson/ros2_ws/src/saltybot_bringup/saltybot_bringup/profile_loader.py
@@ -0,0 +1,167 @@
+#!/usr/bin/env python3
+"""
+Issue #506: Profile Loader for SaltyBot Launch Profiles
+
+Loads and merges launch parameter profiles (indoor, outdoor, demo) into
+the full_stack.launch.py configuration.
+
+Usage:
+  from saltybot_bringup.profile_loader import ProfileLoader
+  loader = ProfileLoader()
+  profile_params = loader.load_profile('indoor')
+  # Override parameters based on profile
+"""
+
+import os
+import yaml
+from typing import Dict, Any, Optional
+from ament_index_python.packages import get_package_share_directory
+
+
+class ProfileLoader:
+    """Load and parse launch parameter profiles."""
+
+    VALID_PROFILES = ["indoor", "outdoor", "demo"]
+
+    def __init__(self):
+        """Initialize profile loader with package paths."""
+        self.pkg_dir = get_package_share_directory("saltybot_bringup")
+        self.profiles_dir = os.path.join(self.pkg_dir, "config", "profiles")
+
+    def load_profile(self, profile_name: str) -> Dict[str, Any]:
+        """
+        Load a profile by name.
+
+        Args:
+            profile_name: Profile name (indoor, outdoor, demo)
+
+        Returns:
+            Dictionary of profile parameters
+
+        Raises:
+            ValueError: If profile doesn't exist
+            yaml.YAMLError: If profile YAML is invalid
+        """
+        if profile_name not in self.VALID_PROFILES:
+            raise ValueError(
+                f"Invalid profile '{profile_name}'. "
+                f"Valid profiles: {', '.join(self.VALID_PROFILES)}"
+            )
+
+        profile_path = os.path.join(self.profiles_dir, f"{profile_name}.yaml")
+
+        if not os.path.exists(profile_path):
+            raise FileNotFoundError(f"Profile file not found: {profile_path}")
+
+        with open(profile_path, "r") as f:
+            profile = yaml.safe_load(f)
+
+        if not profile:
+            raise ValueError(f"Profile file is empty: {profile_path}")
+
+        return profile
+
+    def get_nav2_overrides(self, profile: Dict[str, Any]) -> Dict[str, Any]:
+        """
+        Extract Nav2-specific parameters from profile.
+
+        Args:
+            profile: Loaded profile dictionary
+
+        Returns:
+            Dictionary with nav2_params_file overrides
+        """
+        overrides = {}
+
+        # Velocity limits
+        if "max_linear_vel" in profile:
+            overrides["max_vel_x"] = profile["max_linear_vel"]
+            overrides["max_speed_xy"] = profile["max_linear_vel"]
+
+        if "max_angular_vel" in profile:
+            overrides["max_vel_theta"] = profile["max_angular_vel"]
+
+        # Costmap parameters
+        if "costmap" in profile and "inflation_radius" in profile["costmap"]:
+            overrides["inflation_radius"] = profile["costmap"]["inflation_radius"]
+
+        return overrides
+
+    def get_launch_args(self, profile: Dict[str, Any]) -> Dict[str, str]:
+        """
+        Extract launch arguments from profile.
+
+        Args:
+            profile: Loaded profile dictionary
+
+        Returns:
+            Dictionary of launch argument name → value
+        """
+        args = {}
+
+        # Core parameters
+        args["max_linear_vel"] = str(profile.get("max_linear_vel", 0.2))
+        args["follow_distance"] = str(
+            profile.get("follower", {}).get("follow_distance", 1.5)
+        )
+
+        # Mode (indoor/outdoor affects SLAM vs GPS)
+        if profile.get("slam", {}).get("enabled"):
+            args["mode"] = "indoor"
+        else:
+            args["mode"] = "outdoor"
+
+        # Feature toggles
+        args["enable_perception"] = "true"
+
+        if profile.get("tricks", {}).get("enabled"):
+            args["enable_follower"] = "true"
+        else:
+            args["enable_follower"] = "false"
+
+        return args
+
+    def validate_profile(self, profile: Dict[str, Any]) -> bool:
+        """
+        Validate profile structure.
+
+        Args:
+            profile: Profile dictionary to validate
+
+        Returns:
+            True if valid, raises ValueError otherwise
+        """
+        required_keys = ["profile", "description"]
+
+        for key in required_keys:
+            if key not in profile:
+                raise ValueError(f"Profile missing required key: {key}")
+
+        return True
+
+    def merge_profiles(
+        self,
+        base_profile: Dict[str, Any],
+        override_profile: Dict[str, Any],
+    ) -> Dict[str, Any]:
+        """
+        Deep merge profile dictionaries (override_profile takes precedence).
+
+        Args:
+            base_profile: Base profile (e.g., indoor)
+            override_profile: Profile to merge in (higher priority)
+
+        Returns:
+            Merged profile dictionary
+        """
+        merged = base_profile.copy()
+
+        for key, value in override_profile.items():
+            if key in merged and isinstance(merged[key], dict) and isinstance(
+                value, dict
+            ):
+                merged[key] = self.merge_profiles(merged[key], value)
+            else:
+                merged[key] = value
+
+        return merged