BEST 1. Grundy - High damage, easy to use, amazing buffs 2. Batman - Gives him stupidly good zoning potential. 3. Aquaman - It's basically a free breaker. It's incredible. 4. Black Adam - It doesn't seem like much but it's free and easy damage. 5. Killer Frost - She already has high damage and combo potential and her trait increases both exponentially.
WORST 1. Harley - Extremely niche and the random aspect makes it hard to use well. 2. Cyborg - Sounds good on paper but it's weak in practice. 3. Shazam - Other power up traits are just plain better. 4. Lex - Awkward to use well, I think Doomsday's trait is just a better version of Lex's really. 5. Wonder Woman - Sword stance is very niche and it doesn't feel as effective or as fuly fledged as Nighting's style change.