0 downside to Thor. He deals a ton of damage on his 1^st attack; his 2^nd attack damages adjacent targets and his 3^rd attack shoots lightening at all opponents and Stuns them. He is part of the Cosmic and Mystic classes so you can use him for the long run. I’m also leveling up Heimdall and Loki as well so all 3 give each other Asgardian buffs. And eventually the more damage Thor takes, he’s able to unleash a massive counter that hurts all opponents. Thor is a character that is built to be in a lot of starting rotations so I highly recommend putting a lot of points into him.

Simptastic Joe