Just finished all 3 seasons of Castlevania with Z. It's definitely a good animated series, and I would recommend everyone to at least give it a shot. If it doesn't appeal to you in the first 3 episodes, then it's definitely won't do much later, which I will discussed below.
Animation beauty aside, I thought the story, characters and the world was pretty damn interesting. I like Dracula, I like Issac, I find myself at odds with cheering on the villains sometimes and even some funny moments. It is a very, very strong 4 out of 5. Things that hold it back is mainly the pacing issues for few things:
The library section was definitely the boring part in the season after they awakened Alucard. Felt they spent way too much time with the heroes dicking around in the institution. The buildup to prevent the castle from teleporting was awesome, but the the evidential fighting against Dracula felt a "bit" lackluster since their conversations between them was much to be desired. Since Trevor is Belmont and Shypia is a Speaker Magician, I felt that there should be more interactions between them. Another episode is enough to fill that kind of stuff.
The next is the twins. I don't mind what they did, but I felt like there should be more build-up to the Twins (or friends?) attempting to kill Alucard. I figured they were always intended on killing him, but there wasn't much to go off by; they straight up did the boom boom with him, then suddenly "death". Felt way too fast for me :lmao:
But yeah, good show!