Mirage seems to have been the name of Lady Rose once, but they've changed it for some reason. As for Wily, I'm still using that name in my posts when revering to Wisakejak, because it's a lot shorter and much easier to type!
I thikn that is Windwalker. There was something about getting him early if you pre-ordered the game or something. I don't know if this is true (didn't pre-order)...
If you don't have him at the start, I think he appears in Ghostbreakers as a 'captured' ghost.
There is a patch available which once run, allows Windwalker into your team at the very start of the game. This becomes very handy as he is a powerful ghost. So on Haunting 101 you can sit him outside the conservatory picking people off. Becoz of him I can now complete H101 in about 2.30.
One thing to note though. The Windwalker patch only works on new games. So if you installl the patch, don't expect him to appear in your current team. You'll need to start the game from the top.
Also note. The ghosts in the cells in GhostBreakers level vary. You can have up to three ghosts in the cells, but if you managed to free Blue Murder, Banzai or some of the others... they obviously won't appear there.
If anyone started the game with the Windwalker patch then found all ghosts, hidden and otherwise, before reaching Ghostbreakers... the chances are you won't have any ghosts to free in the cells
On the subject of Wisakejak, anyone know where this name comes from? When I run a websearch I get mostly GM stuff, and also 'Cosmic Baseball Association', where Wisakejak is on a team called 'Tricksters'.