All right - the Magpie is an older villain, formerly active in the silver era before hanging up his glider and going 'legit'. He has a legitimate business as an antiques dealer and professional appraiser, but he's got a backroom business in acquiring mystical and cosmic artifacts. He's gotten some interesting items and sold a few pieces for Tumbler and the White Rabbit.
Armorer has been around since the bronze age, having made weapons and gear for criminals after being subsequently fired from AEGIS' R&D. They are unfortunately stuck in their power armor, the only thing still keeping their heart beating. But when you need a freeze ray, or a sonic cannon, or maybe even some simple robots with lasers, they're the person to go to for that.
Tegan Queen is a formerly five time Wyld Wrestling Women's Champion. She branched out after getting suspended too many times for juicing with RIP, an illegal muscle enhancer that's still used on the body-building scene despite the risk of hyper-aggression. She's often the henchwoman of choice for anyone looking to start up in Bay City, and so she's often the first in the know for a lot of insider info. She's actually worked with Tumbler more than a few times, and Tumbler has the most obligation to her right now.