Regulon Four

Regulon Four, or Regulon IV, is a planet in the Regulon star system. It is home to fearsome creatures known as Regulon metalmongers.

Fiction

The Transformers cartoon

Kup and his platoon were once stranded on Regulon Four and beset by metalmongers. The Rebirth, Part 2

Descent into Evil

Later, the Autobots Chromia and Flareup defeated the Insecticon Buzzclaw there. Descent into Evil

The AllSpark Almanac

Regulon IV was a robotic planet in the Autobot Commonwealth. The AllSpark Almanac II

Prime cartoon

Plot details for One Shall Rise, Part 3 follow. Spoilers have expired, you may remove this tag

In an attempt to escape Earth from Unicron's wrath (and to take command of the Decepticons) Airachnid ordered the Nemesis to be taken to Regulon 4. Soundwave however objected to deserting Megatron and they remained on Earth. One Shall Rise, Part 3

Notes

• The original spelling from the Generation 1 cartoon appears to be "Regulan", but the 2005 comic "Descent into Evil" established "Regulon" as the correct spelling. Since the previous spelling never appeared in print, the 2005 spelling is considered the official one.