Trollino, Mike and Exe

Mike: He's a yellow-furred dog with a green cape, big eyes that sometimes glow when he uses his superpowers. He's prone to making a mess, loves chocolate (despite it being poisonous to dogs), and is constantly searching for diamonds. Although he's mischievous, he demonstrates loyalty, bravery, and affection, especially towards his owner, Trollino. He possesses energy abilities that activate with intense emotions or dangerous situations. Mike can talk, but he only acts like a dog when there are strangers around.

Trollino: He wears an orange vest with yellow buttons, blue shorts with red trim, and no shoes. He also wears a decorative crown. He often gets angry at Mike's antics, but he's the responsible one in the group. He's calm at times, but he can get depressed or angry easily.

Exe: He is identical to Mike but with darker or inverted colors, red eyes, and a malevolent smile. His behavior shifts to a more "anti-hero" or stern mentor tone, focusing on training Mike and Akela to control their powers and face greater threats like Karma. He controls the "Exe" state, related to dark energy and fury, capable of destroying worlds if left unchecked.

Robin: She has blonde hair, large eyes, pale skin, and freckles. She wears a green blazer, a sleeveless shirt, a yellow scarf, a black beret, and patched orange pants. She is characterized as being organized, focused, and centered around tranquility, hating chaos or Mike's annoying behavior. She likes money, peace and quiet, order, and singing. She hates stealing, Akela misbehaving, and Mike being annoying.

Akela: She is Mike's sister, initially presumed dead after the lab explosion in 2016. Unlike Mike, Akela is a cat, which creates contrasts in the series. She is described as cheerful, scheming (in the sense of searching for things), thieving, and stern. She can be egocentric and mischievous, similar to a typical feline personality. It is suggested that she possesses powers, possibly speed.