Except worse than Mellka!
Hear me out, I get that they are fundamentally different but here’s the problem.
They both have 20 ammo clips, they both have an L trigger melee that does more damage than regular melee, they both have a dash attack, they both have a circular aoe special, and they both are pretty mobile.
Let’s list differences then starting with Caldarius. Caldarius has a shield, he does more damage at closer rang with his gun, he can double jump, he has a blinding AoE attack, and his Ult launches him into the air where he can strike with an AoE circle. He may have health regen?
Mellka has a gun that launches the clip to poison the enemy, at which point you can now do more damage both with claws and range attacks, AoE is mostly used (in my case) as a get out of dodge ability, no shield but pretty fast health regen (especially coupled with gear), Ult appears underwhelming, I’m not entirely sure what purpose it serves.
So ya, looks like quite a few differences right? As I said, fundamentally they’re about the same.
I could do without double jump, I can do without a shield in multiplayer because there just isn’t enough ways to heal your health fast enough, the venom canister is just amazing feature that I have killed even after being killed.
Sooooo what say you? I think the similarities are just too similar at this point. And I get that Caldarius is more of a finesse that maybe I need to work at him more, but for nearly an identical skill set I’ll just choose Mellka 
I want an honest to goodness debate on this, please no name calling or anything like that, I have honest concerns I want addressed and I don’t mean this topic to offend anyone.

