Cascade is a member of the GPRA, a metahuman militant group, in After Dark. Aside from being a fearsome hydrokinetic, she may be best known for her LED tattoos.
Siren, in all her mermaid/roller-derbyist glory, appears in Copper Knights and Granite Men.
Be sure to check out Jaisamp’s other excellent art, and tell her we sent you. And if you like these, why not check out our previous commissions of the Cyclone Ranger by j3rm55 and a whole lot of sketch cardy goodness by D.J. Coffman.