Yeah, Showtaro Morikubo really surprised me with the way he's handling Bartolomeo's voice…
I mean, you know it's Shikamaru, or Tensa Zangetsu when you hear him, but he still sound different way, kinda crazy trembling voice.
But then again, Toei maybe doesn't give One Piece great animation (although, it does have really nice art of characters, world, and a lot of colors which for me is always a good thing), but it always had amazing voice actors and music.
I just hope Kaido, whenever he appears, is voiced by Norio Wakamoto (Ganzack from the very first One Piece anime); I just have that feeling that he could be fitting for such character from the way he was talked about, but I never saw him, aside from that time when Garp first time talked about Yonkou.