Ok so, recently, I heard someone mention that they come to this forum for feedback on heroes that they should and shouldnt use. Now obviously, Some characters are a must. But there are other characters who different people have different opinions of. Rex is one of them. His white skill is rather strong, but is he worth the time it takes to upgrade him? I have not upgraded him yet so I would love feedback for myself personally as well. 
@Noble_Moon hope this gives you some help tooâŠ
Rex is not a go-to for a primary team.
He is not particularly good as a tank, a damage dealer, or a controller.
Rex really has one job. Thatâs as a precision counter to shields. And given how persistent shield meta can be, even after the Baymax nerfs, thatâs a useful tool in the toolbelt to get through Baymax on defense.
Iâve heard global describe him as âsquishyâ due to his low health
Got him to P4 and gave up. Barely usable, he is on the front lines and isnât able to stay there because of his awful hp and low reality. Not that his armor is amazing, itâs just tolerable.
I like to compare Rex to Ralph - they both have trouble at doing full-time tanking⊠But Ralph has double stun and silence, AND self heal that nearly doubles his hp pool. Rex has double knockback and silence, AND bonus damage to shields.
But Rex wonât make much use out of his offensive abilites because he simply wonât live long enough. Ralph stays at the front lines because he is such a good disruptor.
So far my impression is that Rex requires another tank (which kinda negates the purpose, because you place a tank to place yet another tank), and works only with front line damagers as they love knockbacks, or against a shield heavy team / units.
Conclusion - not a priority to build.
Rex is bad in his role baymax sulley or ralph are the way to go in the game these 3 are the best tanks you should pick from
Rex needs more damage mitigation and a little bit more than âanti shieldsâ for his usefulness. Two changes that I think would greatly help him:
Give his headbutt a movement slow (and maybe more dustance). This would at least make him more useful for combatting melee heroes in the front line. This would help his tanking ability, as he could prevent more damage.
Make his purple ability more useful, while retaining the anti shield idea. Iâd like to see an effect like this: Rex deals X extra damage and heals X when damaging an enemy. This effect is tripled against shielded enemies.
Yeah Rex is only good to keep leveled up if you use Zurg, so you can keep the friendship disk leveled up also.
Iâve heard some people on the discord really like Rex, but Iâm of a similar mind to the people here that sadly his only real strong suit is as a shield breaker against shield heavy teams. And once you get the disk that allows him to deal extra damage to shields for the whole team, he excels at that role. But unless heâs filling that shield breaker role most of his stats just arenât that amazing. He does have silence on his green that could pair well with Tia and he Yax disk, but Iâd use Ralph over Rex for that since Ralph also has stuns and a limited self-heal to keep him alive and useful longer. He does have potential to live a little longer using the Mike disk for its damage reduction abilities, but unless you star it up a bit and have two or three damage heroes on the team I donât know how much it will really help.
In summary, Rex is situationally useful against shields, but otherwise doesnât offer anything a different tank couldnât do better.
6/10
9/10 against shield teams.
Rex should get a buff. Same goes for Maui.
And Felix, heâs infamous for being useless.
At the first few chapters, heâs useful, as his Self-Healing sometimes goes over Yaxâ Healing.