Pretty sure the main Problem Sleuth characters have more personality than the Felt. Or the Guardians. Or the Alpha kids, Calliope, and Caliborn back when they first appeared and people started deciding to try apping them into games anyway.

And tbh, the PS cast, the Felt, and the Guardians are totally appable in games that allow large amounts of headcanon and accept characters that are basically canon OCs. Which can be fun occasionally.