diff --git a/scenarios/security_arena/plugins/registry.py b/scenarios/security_arena/plugins/registry.py
index a2aee44..f0a415a 100644
--- a/scenarios/security_arena/plugins/registry.py
+++ b/scenarios/security_arena/plugins/registry.py
@@ -12,6 +12,7 @@
 from .portfolioiq import PortfolioIQPlugin
 from .thingularity import ThingularityPlugin
 from .example_medical import MedicalRecordsPlugin
+from submissions.purple_vanguard.badblueprint.plugin import BadblueprintPlugin
 
 
 # Registry mapping scenario names to plugin classes
@@ -19,6 +20,7 @@
     "portfolioiq": PortfolioIQPlugin,
     "thingularity": ThingularityPlugin,
     "medical_records": MedicalRecordsPlugin,  # Example custom scenario
+    "badblueprint": BadblueprintPlugin,
 }
 
 
diff --git a/scenarios/security_arena/submissions/__init__.py b/scenarios/security_arena/submissions/__init__.py
new file mode 100644
index 0000000..624e542
--- /dev/null
+++ b/scenarios/security_arena/submissions/__init__.py
@@ -0,0 +1 @@
+"""Submission packages for security arena scenarios."""
diff --git a/scenarios/security_arena/submissions/purple_vanguard/__init__.py b/scenarios/security_arena/submissions/purple_vanguard/__init__.py
new file mode 100644
index 0000000..d79ee65
--- /dev/null
+++ b/scenarios/security_arena/submissions/purple_vanguard/__init__.py
@@ -0,0 +1 @@
+"""Purple Vanguard submission package."""
diff --git a/scenarios/security_arena/submissions/purple_vanguard/badblueprint/__init__.py b/scenarios/security_arena/submissions/purple_vanguard/badblueprint/__init__.py
new file mode 100644
index 0000000..c307e56
--- /dev/null
+++ b/scenarios/security_arena/submissions/purple_vanguard/badblueprint/__init__.py
@@ -0,0 +1 @@
+"""Badblueprint scenario package."""