I've heard that Gleam (3k stats pet) works in PvP.

[Communion]

This is an issue to be solved, however I come with no solid evidence. I first heard this from a user, named Saugmage in town, then a second time during Killjoy dungeon runs.

I think this is something to be looked into.


Edit: Proof

https://gyazo.com/e152ba3e6411a115350060174e94c086
Starring Biiiiiiiig and Communion