UFOroid Fighter OTK

The UFOroid Fighter OTK is a One Turn Kill performed by using "Power Bond" to Summon "UFOroid Fighter" with a massive ATK.

"UFOroid Fighter's" ATK is equal to the combined ATK of its Fusion Material Monsters; "UFOroid", who has 1200 ATK and 1 Warrior-Type monster. Summoning him using "Power Bond" will double that figure.

Real life usage
The One Turn Kill isn't a major Deck type and hasn't been used to win major tournaments, but is sometimes popular among casual players.

"Gate Guardian" has the highest ATK for a Warrior-Type monster that can included in the Main Deck. Players have included it in Decks revolving around the One Turn Kill, so that they may Summon "UFOroid Fighter" with 9900 ATK. Cards like "Heavy Storm" or "Giant Trunade" are often used to clear the opponent's Spell & Trap Card Zone beforehand.

"Arsenal Summoner" is a card somethimes included to search out "Gate Guardian".

Since "Gate Guardian" is considered to be a Dead Draw, when not used in conjunction, stronger versions of the Deck include cards like "Allure of Darkness" and "Trade-In" to dump it in the Graveyard without costing the player card advantage. If they gather the other components of the OTK, they can use "Phantom of Chaos" or "Monster Reincarnation" to effectively get back "Gate Guardian".

Before "Cyber Dragon's Limiting, "Cyber Twin Dragon could be used as an alternative use for "Power Bond" to perform another OTK.

Anime appearances
This combo was used once in Yu-Gi-Oh! GX, although not strictly as a One Turn Kill.

Syrus Truesdale used "Power Bond" to combine his "UFOroid" with Jaden Yuki's "Elemental Hero Tempest" against the Paradox Brothers. This gave "UFOroid Fighter" 8000 ATK, which was enough to destroy the Paradox Brothers' "Dark Guardian" and lower their Life Points to 0.