Ehm I think you may have gotten some things mixed up in your post their friend :3
Sho the Axew, is currently obeying Somnus the hypnos orders and staying put, Sho is also the one who was talking to Alistair about his "Brilliant plan" to trick the Umbreon, not Flight, the Emolga.
Alistar ran off after Axel the Raichu, who is a non-infected who wanted to make a distraction to help Zero the Umbreon who has just passed out.
*phew* that about covers it, I hope that cleared things up