OVA
Description
Gigant Bomb is a Decepticon who originated in 2025 and traveled through a Blastizone phenomenon to 2004. His arrival aligned him with the era's Decepticon forces, leading him to partner with the similarly time-displaced Smokesniper. Together, they combine into the aerial combiner Gigant Sniper, significantly enhancing their threat level. Gigant Bomb harnesses an internal purification plant that rapidly absorbs and utilizes nearly any form of energy, bolstering his offensive and defensive combat capabilities.

In the Robot Masters comic, empowered by a fragment of solitarium, he joined Smokesniper in attacking Autobots Mirage and Bound Rogue before engaging Optimus Prime and Optimus Primal. The arrival of future Autobots Star Saber and Victory Leo interrupted their assault. Combining into Victory Saber, the Autobots severed the solitarium from Gigant Bomb, forcing a retreat. Later, he observed Beast Megatron orchestrating a battle between Lio Convoy and Victory Saber. His delayed departure allowed the Autobots to recognize the deception, resulting in Gigant Bomb and other Decepticons facing concentrated fire from four Autobot leaders. He was present for Air Hunter's report of the original Megatron's return. During the final conflict, Gigant Sniper fought Victory Saber again but was defeated, and Gigant Bomb was returned to his original timeline.

Within the Robot Masters OVA, Gigant Bomb transported Beast Megatron to a battlefield involving Starscream, Wingstun, Victory Saber, and Optimus Prime. He and Smokesniper pursued Optimus Prime through a canyon until Star Saber intervened, stalling them and allowing Prime to confront Beast Megatron. The Decepticons retreated after Optimus Prime and Optimus Primal executed their "Double Prime Tornado" attack. In a later city battle, Megatron commanded the combined Gigant Sniper as an aerial platform to target Optimus Prime. Lio Convoy dislodged Megatron, and Victory Saber separated Gigant Bomb and Smokesniper using his blade.

The Robot Masters 3D diorama manga depicts Gigant Bomb and Smokesniper, combined as Gigant Sniper, attacking Autobots assisting with Athens Olympic preparations under Beast Megatron's orders. After separating, they were overwhelmed by the numerically superior Autobots and compelled to clean up the damage.

Gigant Bomb transforms into a large "flying wing"-style stealth bomber capable of airdropping missiles via pressure-launch mechanisms. He also possesses a third mode resembling a treaded tank or rocket launcher platform. His primary weapon is a six-missile gatling cannon firing projectiles sequentially via a ratcheted rotation mechanism; it mounts underneath the bomber mode and rests on his shoulder in robot mode. He wields an additional non-firing energy weapon composed of solitarium called the Pulverizer. This weapon can combine with Smokesniper's Radial Pod, though the resulting configuration lacks a defined form. Combining with Smokesniper's jet mode forms the super aircraft Gigant Sniper, described as a "high mobility fortress".