Felicity or Roald? Felicity's shield stuff is a really great help in the Story Mode and her damage is way better than Roald but when it comes to pvp against a pure damage type of sonny you will just get 1 hit even with a shield, But on the other side Roald has the stun thingy but the bad part is he will cast it unexpectedly and also costs Focus which means if you were hit by a skill that disables focus using skills Roald can't stun someone he will just use his normal attack but if I Distrupt him he will have no mana And I forgot if the skill disables the focuse using skills are not removable anyways who is a better partner in the Arena?
Felicity stuns too I think. One thing I hate is her defensive spell, blade dancer, actually makes a unit more vulnerable if broken. If you don't have high speed on her, don't ever put her on defense.
Roalds shield which also heals is so nice. Against focus type enemies, felicities dagger attack can be nice. You can equip felicity with andriod armor and stuff which can give her more then enough HP.
Against healing enemies felicity can be really nice. Or enemies you need to punch through their defenses fast.
Actually, if you're character is geared toward healing, you don't need veradux and can have both Roald and Felicity. This is also good if you're strategy is simply to do as much damage as possible, as quickly as possible, such as agaisnt the bomb.