[victorp13]

That's a fake account.

[pluma]

It's not verified but I'm missing the obvious clue as to why you think it's fake. They seem to post genuine tweets and link to official marketing websites.

[electroly]

All of Blizzard's accounts are verified. Their official corporate account is @blizzard_ent (note the "t").

[clevernickname]

I've been had. Ironic timing on their part, at least.