@Titans1234 - Honestly, I'm not sure. It's been a good while since I watched shows like Justice League and Justice League Unlimited so my experiences will likely be a fair bit rusty.
I remembered Roxy Rocket as I tended to watch the Batman and Superman animated series more than the others - with Batman Beyond and The Zeta Project after that. Cheetah and other villains from JL / JLU or Static Shock, not so much.