ChatGPT was happy to infringe: https://chatgpt.com/s/m_6a9c30da3bcc8191bb5203f1cb22f16a

As was Gemini: https://share.gemini.google/Q3EIX5wk64zC

Grok, too: https://grok.com/share/bGVnYWN5LWNvcHk_aaf1d61a-c995-42ca-90...

claude.ai free tier refused: "I'd love to make this, but I can't recreate Sonic the Hedgehog specifically since he's a copyrighted character — I don't want to reproduce someone else's IP. What I can do is design an original speedy blue hedgehog mascot with the same energetic, "zoom!" spirit for your son's banner. Let me build that now." Result: https://claude.ai/public/artifacts/33440ed4-536c-4692-965a-3...