Hello to you both!
I would give the build a -0.5. The build strikes me a bit...odd, it's very boxy and has sharp edges, while the reference picture shows King Tonberry as very rounded and smooth. I think that while the build resembles the reference, the build could be executed with more smoothness.
Now onto the parkour! I would give the parkour a +0.5. The parkour is varied and well mixed, and this is good. However, I think some of the parkour is a bit annoying, with too many corner jumps in some places (Mappers are trying to move away from less corner jumps, as they are more annoying and slow down the pacing of a map overall). I otherwise think the parkour is fine, thus the positive rating. Perhaps revisit the parkour to have less annoying jumps throughout! Most of the parkour is otherwise fun to play :)
Please note that I am not a map judge, I'm a Mapper and community member who likes to give feedback on submissions to help improve the skills of those who submit maps! Good luck on your submission :)