i'm completely aware of the origin but is it allowed considering the fact that 99% projects involving him are about something needing a hero that (probably) do not break any guidelines?

dont think our gassy is allowed due to his very adult origins and theme

as for his catchphrase i think you can say it as long as you dont mention gassy himself

what is that (I now speak New Forumer. /j)

What is that (probably) meme.

not allowed, it's like a fat f*rt fe**ish and it count as innapropiate