system
A chat on subreddit /r/PoliticalCompassMemes
human
More likely that they approached the execs with a script, the old, lazy, out-of-touch execs said, "Them Gen Z kids will like it, but it needs more broad appeal.  We're not doing anything with this IP, so slap some recognizable characters in it."
gpt
IIRC, this is pretty much exactly how Sonic Underground came to be, back in the old days.