I think with the change to animated show over comic its gonna definitely change how the characters end up acting, but even so Dave is a bit off, i still really enjoyed how they've characterized him but it doesn't feel like the same Dave from act 1 so im excited to see where they take him when the show proper comes out. John and rose were exactly what i expected to be tbh, both acted pretty much how they did at the start of the comic from the little we saw, jade didn't really get too much screen time so to early to say for now.
The voices for the cast i really enjoyed, roses in particular feels spot on for what i imagined. as for Daves voice i think the way he emotes isn't what i expected, which i think most people are thinking the same thing, he doesn't have that non chalantness that he had initially, but the voice itself being higher pitch i think does fit.
Overall i think they did a pretty good job of characterizing them. will be interesting to see how the community reacts to the changes they will inevitably make to the characters tho.