Can't remember the name of an RPG(mmo?)) franchise?

Sep 2, 2018
I'm looking for a game that i used to play in....2014?2015? It has a sequel too. The game was a boss fighting type game, and what i remember is a dinosaur boss at the beginning. The sequel i played in...2016?early 2017? I remember a butcher boss-thing from that game with a giant cleaver, kinda reminded me of roadhog from OW. Any help would be appreciated :)