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

In an atempt to escape Earth from Unicrons wrath (and to take command of the Decepticons) Arachnid ordered the Nemesis to be taken to Regulon 4. Soundwave however had other ideas and beat up the spider bot and they remained on Earth.

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.