From Wikipedia:

A square-jawed, muscular, bright blue figure with antennae sticking up from his head, the Tick is a surreal parody of superheroes. The Tick is high-spirited, frequently obtuse, and prone to quipping odd, dim remarks and "inspirational" speeches filled with bizarre metaphors. His superpowers are nigh-invulnerability, which allows him to crash and bang about without injury; super strength (he can bend a steel girder with ease); and something referred to as "drama power", or basically a tendency for the Tick's powers to increase as the situation becomes more dramatic. He can also survive out in space without a suit and underwater without oxygen. He is known for his nonsensical battle cry, "Spoooooon!", which he decided upon one day while eating breakfast (specifically the cereal "Drama Flakes").

Like many superheroes, The Tick has a sidekick: a former accountant named Arthur, who wears a white moth suit that allows him to fly, although he is often mistaken for a bunny due to the long ear-like antennae of his costume and the fact that his wings are often folded up. The Tick is impulsive, and Arthur serves as a sort of conscience; the hero often irks his sidekick. Arthur's "battle cry" is "Not in the face! Not in the face!"

Originally featured in an independent comic book series, The Tick and Arthur were made popular by an animated television series (1994—96) and a live action television series (2001—02). Both series aired on the Fox Network. According to the live action series The Tick is 6 feet 6 inches and weighs 230 pounds (eighteen inches and a hundred seventy pounds less than his dimensions in the comic) and has black hair and blue eyes.

In all of his incarnations, The Tick is surrounded by a cast of equally absurd superheroes and villains, many of them parodies of popular comic book characters and character types. The Tick lives in a city called "The City". In the animated series, The Tick was assigned to the city after his "Cabinet of Terror" (described by the Tick as the "best destruction device 1974 had to offer") exploded during his city alignment selection trials at the National Super Institute Convention in Reno, Nevada. According to the series' companion book, The Tick: Mighty Blue Justice!, at least one of the judges was amazed by this (perhaps by The Tick's survival), awarding The Tick a score of 10 out of 10.

In the original comic books, the Tick is/was apparently legally insane, an escapee from a mental institution located not too far from The City.

***By the way, the live action show was the best. series. ever.

(image from deviantart.com)