You got it!
Bumi has many lovable traits but I feel more drawn to-
#1- Bandeiras Hattori from King of Fighters
Physically: Dark skin, average fit physique, decent ninja design.
Personality: A total geek who loves to workout for the sake of his ninja goals. Most things that could be seen as a flaw for him I see as adorable:
He's a wannabe ninja, super naive, and completely passionate about his niche dream of running a Brazillian Ninjutsu school. He's mostly comic relief but also unintentional fanservice (to me at least). A rare and interesting combination.