“Basically Wesker still has the progenitor virus.  Birkin pretty much has Sherry’s powers.

Here Wesker had a normal childhood and was taught to help people. Birkin’s wife is the big bad. She got Wesker when he was a kid and he was in the role of Lisa Trevor. But Wesker kept his intelligence.  Alexia helps Eveline with the rapid aging and lack of control problem and Eveline is the Sherry of the universe. Alexia developed a more carefree perspective but still did the hyper sleep.  She had a caring mother. So the S.T.A.R.S group here is Wesker the leader, Alexia, Birkin, Ada, and Eveline.

Wesker has help from Birkin to keep the cocktail of viruses in his system controlled by a replaceable patch of antiviral medicines that works for a year.

The Bakers let them use their house as a base! They have their powers but since Eveline was stabilized she can’t control brains as well. So they stay nurturing and have the regen abilities. Lucas makes the weapons along with Birkin.