The Ideon was originally constructed by a long dead alien civilization on the planet Solo (known as the 6th Civilization because it was the 6th alien civilization Terran colonists had discovered). It is comprised of three rather ordinary-looking trucks (Sol Amber, Sol Vainer and Sol Conver) which were discovered and restored by Terran scientists excavating ruins on planet Solo.

When a previously unknown alien fleet, called the Buff Clan, attacked the colonists they got into these trucks for protection and were shocked when - on their own - they transformed and combined into the powerful humanoid machine known as the Ideon. Although none of these 3 machines were that powerful on their own at first, they were quickly equipped with powerful missile launchers and Glen Cannons by mechanic Joliver Ira. The Ideon is carried aboard the Solo Ship throughout the series as they flee through the universe. It is finally destroyed in the movie Ideon: Be Invoked in the final battle against the Buff Clan’s most powerful weapon, the Gando Rowa.