TV-Series
Description
Cyclonus is a Decepticon warrior characterized by his maniacal and unstable nature. He charges headlong into battle with reckless abandon, all weapons firing, often laughing hysterically or yodeling, displaying minimal tactical planning and sometimes endangering allies. His love for combat supersedes faction loyalty, prioritizing engagement over ideology. Though lacking intelligence, Megatron valued his fearlessness.

Originally within Megatron's inner circle on Cybertron, Cyclonus participated in early assaults, including breaching the force shield of Mini-Con Village C52 by tunneling underground. During this mission, he claimed the Mini-Con Crumplezone as a personal partner; Crumplezone adopted similar reckless tactics. Cyclonus later joined the Decepticon assault on Cyber City.

Among the first Decepticons on Earth, Cyclonus adopted a flat-nosed combat helicopter alternate mode. He frequently partnered with Demolishor, sharing destructive enthusiasm though their interactions involved friction. Cyclonus unexpectedly fell asleep during downtime due to narcoleptic tendencies. On missions, he guarded energon-draining devices and hunted Mini-Cons; failures like overlooking a nearby Mini-Con resulted in punitive "motivation" from Megatron.

He fought in the Unicron Battles as part of the united Armada. Following Megatron's death, Cyclonus reluctantly joined the Autobots but harbored reservations. A decade later, during the Energon conflict, he guarded Cybertron City on Earth's moon but abandoned his post during a Terrorcon attack, fleeing to Earth. He later assisted Scorponok in resurrecting Megatron and convinced Demolishor to rejoin. After sustaining severe combat damage, Megatron forcibly upgraded him into Snow Cat using Unicron's techno-organic tentacles. This transformation granted him a snowcat vehicle mode and cryokinetic cannons but further diminished his already limited intelligence. As Snow Cat, he developed eccentricities like yodeling and served Megatron until the conflict's end.

In Dreamwave Productions' comic continuity, Cyclonus appeared in Armada and Energon storylines, participating in attacks on Mini-Con settlements and battles against Autobots. Post-upgrade to Snow Cat, he captured and rigged Omnicons in the Yukon to an energon extractor for reprogramming into Terrorcons; the Omnicons broke free and defeated him. His incompetence led to immediate detection and failure during an Ocean City infiltration mission. His fate in this continuity remains ambiguous following Dreamwave's bankruptcy.

Following the Energon conflict, his Universe toy biography states Snow Cat descended into complete insanity. Without Megatron's guidance, he wandered Kaon on Cybertron as a raving lunatic during the planet's evacuation, an event occurring off-camera relative to other media.