R2 a 6*

Aleor

I already have r2 rulk. Sentinel hits hard, but needs some ramp up. Killmonger is one of my favourite champs animation wise, but hits like he doesn't hit at all. I have a t2a in overflow, so I'd like to rank up one of them. Drax is just there as an extra option

TheLegend27

Killmonger has good power control in the form of being able to tank an infinite number of SP3 attacks (given the attack doesn't have certain extra components to it), really great unstoppable mechanic, really easy to activate true strike, and he has amazing synergies with other champs that are really good on their own.

I'd personally take the hit in damage for that level of utility. I also don't have a 5* sentinel to compare against, so my opinion is heavily biased.

Lvernon15

Killmonger

I’ve got a 6* rank 2 km and have no regrets, he has countless uses with his true strike and indestructible, and a couple lesser known things is that his counterpunch can allow him to do 7 combos from a parry and also get an in when partying stun immune champ, they can also be used to punish unpublishable specials like green goblin

Duke_Silver

Sentinel

Sentinel, not even a question

Msyounus1288

Wouldn’t r2 either of them unawakened.

spaceoctopus

Sentinel

I have sentinel at r2. He's incredibly useful. And at r2 just a godsend for micro variant if you haven't completed it.