My active characters are:

peacefulspring Eirene
dual_heritage Merlin
fish_whisperer Arthur Curry

Not so active:
aboutthetwinkie Winston Zeddemore
serene_visions Vialle
lovesoldthings Sally Sparrow
deathless_moon Selene

Not yet EPed:
villain_ous Ian Howe

Thread-withs that I can think of off the top of my head are:

Eirene - Hawkgirl, Logan, The Tick (because 'rene-Tick would be epic and cracky)

AC - Ben Grimm, Tony Shark, She-Hulk, Hawkgirl

Merlin - Crowley, Hellboy, any pup that might get him to loosen up a little.

Selene - Anyone, as I need to toss her in again. Soon.