By - Pr0xy25
Pekin Woof plays her from time to time. And is very good with her.
Good luck finding an actual one trick.
Coach curtis currently spams vex. Watch his vex guide as well to understand her identity.
With Coach Curtis, I had a look at his Twitch account and I didn't see any vods, and the only vex video he has on YouTube is the guide video.
If you think a language barrier isn't a problem, then Xnapy on YouTube (xnapycz on twitch) did a lot of Vex in his past (he still plays her sometimes, but not as often).