Belphegor
Art -- 1. It embodies absolutely everything I dislike. Although, of course, the wings on his backside are the final touch.
Voice -- 2. Quite rough and phlegmatic, boring.
Mechanics -- 2. It seems to work well after Blood Moon, but without it, it's a risky card that can easily do more harm than good. Weak for a legendary.
Galretto
Art -- 2.
Voice -- 2.
Mechanics -- 3. A useful thing in some cases, although I haven't seen it in ranked matches lately.
Roland
Art -- 5. Pompous. Actually a 4, but it's the best of the ones presented, so...
Voice -- 2. Again, something rough, this time not phlegmatic, but shrill.
Mechanics -- 3. The card can be quite effective sometimes, in the arena and in some builds. But it doesn't seem to be a win condition anywhere, except for that cool dragon from the campaign, which has a forest anomaly ;)
Gowain
Art -- 2. They managed to mess up the art of a knight, and they did. And the boring background doesn't help the card.
Voice -- 2. What?...
Mechanics -- 2. Theoretically a good ability, but in reality, it doesn't work well and conflicts with the abilities of other commanders (Albert's enhancement, Juliet and Romeo's resonance with 3 commanders, etc.). I saw it a couple of times in ranked recently. It ended very badly for the user.
Dark Jeanne
Art -- 4.
Voice -- 3. Maybe it's just my mood, but her voice is also kind of mediocre.
Mechanics -- 5. Even if it's only in specific decks, it's a powerful thing.
Grimnir
Art -- 3.
Voice -- 1. What kind of theater is this? Are there any normal voiceovers in this expansion at all?
Mechanics -- 4. Before the nerf, it was definitely a 5. Now it's more questionable, but it still works great quite often, and, strangely enough, there aren't that many 3/2/3 wards in the game.
Arriet
Art -- 3. +1 point because she's a redhead.
Voice -- 3. Argh.
Mechanics -- 5. Somewhat situational, but when it works, it really works.