This is Karatzu Rockymation. Yes I redesigned him completely. He used to not have large ears, but instead spines that kind of made him resemble a Sonic character. He's meant to be a Koya though, so his new design reflects that (you can see his old design on his page, but it is old.) I actually drew this awhile ago, but was slow to upload it because I wasn't entirely sure. Then I was working on my website and fixed the character List so it now stores all the data in a JSON object file instead of a Javascript one. This allows me to convert the file to a Table format so I can quickly edit a lot of entries very easily.
Karatzu is one of Kao's partners in Kao the Ninja Kid. He tends to act really elderly and cranky, but he has a literal heart of gold (and a metaphorical one too). He's very protective of the team and always puts himself in harms way to ensure no one else gets hurt. He does maintain a tough exterior that makes him look like a Boxer who wouldn't make it far in the ring, but has won several championships, despite his demeanor being that of an old Wild West style cowboy who's trying to retire but keeps dealing with bandits harassing his town.
His gripping of the arm seems painful but it's not at all. Karatzu, like all Karatians are made of a malleable organic rock, so they can all shape shift at will. He's actually showing how much pressure he can endure as a warning to enemies that may come his way, and his ball like fist is him using his hand literally as a wreckingball.
Karatzu Rockymation is coypright to Kao Ninjaratzu