I guess if I could limit them to characters from my own series, Kane / Kanata?
He's modeled off those housecats that have a tuxedo pattern (I really want one...)
An immature teenager who takes puberty-driven chaos to its limits with sex jokes, trolling, and such.
A character I love in general is Gilgamesh from Fate/Stay Night (more Fate/Grand Order, really)
The main character from The Epic of Gilgamesh, the Babylonian? Mesopotamian heroic epic. This version of Gilgamesh has returned from his journey after losing his best friend, and is much more mature in how he handles governing his people. The best king you could ever wish for! Values human life, thinks his subjects deserve days off, and remembers each person's individual efforts. He acknowledges that Uruk will fall; no kingdom is forever, but man his charisma is A++. I think this is why he is such an asshole in the original F/SN, because compared to his people from 6000 BCE, Saber wanting to "change the past to save her people" is so different from his thinking.