In 2019, Horizon Brave accompanies Gipsy Danger and Lucky Seven to Manila to stop a Category IV Kaiju. Horizon holds its own against the Kaiju for a time before suffering critical damage from its barbed tail, requiring the assistance of Lucky Seven and Gipsy Danger, who kill the Kaiju. Horizon Brave had a record of two Kaiju kills before its destruction in battle in Lima, Peru.
Horizon Brave is armed with shoulder-mounted cryo cannons, used to freeze Kaiju in battle or power its melee attacks. "Sub-zero suckerpunch" and "Flash freeze" are two of its signature attacks. Like all Mark-1 Jaegers, Horizon Brave is powered by a nuclear reactor.
The following is roster of named Kaiju defeated by Horizon Brave, assisted or on its own.