Most pets need a buff! The base stats where designed at a time when kits could not dream of getting to stats they are now. Some re working of stats or allow to lvl up to lvl 3 for hp buff maybe?
Couple of examples, rtz is 1100gg and useless, I know a guy who sunk a lot of gg into feeding one, only for it to be useless
Dragon was class but then made useless by all the fire guards