|Hakai-O: Kirito Custom|
|Dub Name||Destroyer: Kurt Custom|
|Frame Type:||Panzer Framed LBX|
|LBX Type:||Personal Customized|
|Brand Maker:||Prometheus (original brand)|
|Game Debut:||Danball Senki (PSP)|
|Anime Debut:||Episode 22 (W)|
|Appears in||Anime only|
'Hakai-O: Kirito Custom' (ハカイオー：キリトカスタム Hakaioo: Kirito Kasutamu) is Kirito Kazama's third customized LBX in Danball Senki W.
The parts formula to build this model are consists of: a standard Hakai-O head, Titan's arms, Hakai-O's torso and Titan's caterpillar legs.
In episode twenty-two, Kirito uses Hakai-O against Jeanne D, Perseus, and Liu Bei to combat them. Despite the others commenting that Hakai-O is a strong but slow type, Kirito’s Hakai-O matches them blow for blow and knocks down Jeanne before finishing Jessica’s LBX off with Kousokuken Issen. Then as Hiro tries to activate Strike Mode for Perseus, Hakai-O defeated him as well, leaving Yuuya and Liu Bei to fight him. In episode twenty-three, Kirito has Hakai-O Custom attack Liu Bei and manages to chop off Liu Bei’s shield as it block most of Hakai-O Custom's attacks. However, Kirito has Hakai-O Custom jump in the air, when to his shock, Yuuya figures out the LBX’s weakness: while Hakai-O is fast, it can’t move like his other LBX in the air. Yuuya launches a surprise attack with Liu Bei's finisher, White Tiger Slash to knock out Hakai-O Custom.
- Titan Arms (タイタンアーム)
- Kousokuken Issen (光速拳・一閃)