God I love this character. He literally has the energy and personality of an over exasperated comic book villain and the animators seem to have a blast animating his every movement.
I love that despite being an all-mechanical-maniac, they animated him like some stretchy cartoon character compared to every other character in this series.
2:16 It would have been cool if you failed at this boss fight, Nefarious would have killed you canonically and then he would rewind time so he could beat you again. And you canonically only defeat him because he is so arrogant that he keeps doing that so long that you win in the end.
This character is simply a gift to humanity. A bit disappointed you didn't include his "death" where he yodels like hell one last time before keeling over.
1:15 & 1:39 I love how even though he's a robot, whenever Nefarious screams at someone, their bodies are affected like wind from his "breath" is being blown on them. Marvelous touch. 👌