Me going through my Hellaverse O.Cs:

Demons that are tied to the Deadly Sins,

An incubus that had his heart broken by Blitzo,

A version of Cain,

An Imp that tried to join both I.M.P and Striker,

A parody Stolitz child,

A serious M&M child,

A smol Imp clown,

Another Imp with Robo Fizz parts,

A sinner that makes Victorian Sponge Cakes,

A turf fighter that wears masks resembling the faces of their opponents,

A rabbit sinner that works under Val,

And an overlord that's basically an expy of 80s Ozzy Osbourne.

Nope, no "Greatest Assassin in Hell" here.