Bruh its theoron not Theran💀 and personally I think it would be brooklynn guy vs jeffy in my version. Because duggie would be brian and jeffy would be stewie.
Lore: After Brookln guy has found shelter he hears marvin in a slow but more suspicous mood, as he goes to investigate, he trips on a trap simmons put, wounding his body, then as marvin gets closer, brooklyn guy starts to corrupt, but as marvin leasts expects it, he uses a flashbang to blind marvin and expel himself of corruption in enough time to continue his song