Ragnarok

Ragnarok is a Decepticon from the Generation 1 continuity family.

Do not shake Ragnarok's hand, for he is literally made out of bombs and lasers.

Fiction

G.I. Joe vs. the Transformers continuity

When the time travelling Joes Spirit and Barbecue arrived in a post-apocalyptic future along with the Cobras Doctor Mindbender, Tomax and Xamot, they were confronted by the sight of Ragnarok and two other titanic Decepticons striding across the ruined landscape. G.I. Joe vs. the Transformers II #2

Ask Vector Prime

To prevent Ragnarok from overwhelming the time-displaced humans, a force such as Vector Prime, the Alternity, or Heinrad shunted the Decepticon to Primax 1104.10 Lambda. Ask Vector Prime

Timeless

Ragnarok's memories were stored in the Vestigial Cortical Complex. Timeless

Notes

• Ragnarok's existence was revealed in coded text within the Vestigial Cortical Complex. The character's name is not even fully shown, but the visible "-narok" and references to a "-rld destroyer" don't really leave a lot of options for this guy's name.