Owo is mostly there for the damage buff from her aura and ECB. The important thing is tanking some of the slimes (with her lion head) for Serpent so any tankier unit like Pacassi should work.
@shreyaskotian1654 Che due to the AOE 2-core break. He won't offer as much of a damage amp so you'll have to make up for the damage elsewhere. If you're using Yao, then Thistle.