Martian UFO Takokichi hails from Hero World, drawn to activity and excitement. He frequently appears at Buddyfight tournaments with his human partner, Ion Nanana, cousin of the series' protagonist Yuga Mikado. Takokichi serves as Ion's primary mode of transportation, often seen carrying Ion atop him to events. He exhibits a highly excitable personality, especially noticeable during conversations or tournament coverage.

Takokichi demonstrates significant adaptability through specialized transformations. His evolved "Martian UFO Transformation, Takokichi Omega" form combines his base structure with "Tako-station" technology. This Omega configuration enhances durability, rendering him immune to destruction by opposing card effects during gameplay. Furthermore, it possesses tactical capabilities allowing strategic retrieval of large monsters and spells from the deck when specific combat conditions occur.

A distinct advanced iteration, "Martian Speedy UFO, Takokichi ΩΩ," results from integration with "Neo Octopus parts." This ΩΩ version features the "ΩΩ Octopus System," a specialized recovery and resource management system. When activated under appropriate battle conditions, this system returns multiple spells from the discard zone to the deck, subsequently generating gauge resources. Based on the quantity of spells recycled, it can also restore vitality points or draw additional cards. Both transformed states share the combat-oriented "Double Attack" capability, requiring gauge expenditure to execute.

Unverified background details suggest a potential familial connection to an entity named Martian UFO Takosuke, with Takokichi possibly being his son. The character's name incorporates a dual meaning: while "Kichi" typically signifies good fortune, it can alternatively be interpreted as "base" or "hideout" with different kanji.