Volunteer Commander Iron

Soloman was a human male once living on the planet Kuat where he would eventually become one of the galactic republics greatest inventors

Before The Clone Wars
Soloman have been acting as both the senator and leader of Kuat. before he became a leader he was actually a gladiator who would overthrow the former leaders destroying castes. during his time a bunch of Senate Guards were inspired by him making the Iron Guard.

Forced to Cooperate
While Soloman was at Kuat maintaining his station when he was approached by Palpatine to secretly assist him by constructing vehicles for the Clone army. Soloman fearing his people would be targeted by the CIS he declined and instead wanted to become neutral. which resulted electrocuted until he gave in. before Palpatine Left he warned Soloman that if he told everyone about what happend he would be a high priority target.

The Clone Wars
With the war began he decided to join the Galactic Republic to make sure his people would be safe from the clutches of the CIS. While the Clone Wars Ranged on Clone looked up to Soloman as a potential leader giving him the Ironic Nickname "Iron". Those Clones would potentially form the 264th Iron legion.

The Inventions of Soloman
Soloman while having access to minerals and materials created several projects include project Stingray (The Guntanks) and project Paper (Power armor)

Operation Rubicon
(Now you may be wondering wtf is Operation Rubicon? let me tell you. Operation Rubicon is a Reverse Order 66 where clones kill other clones on Kuat and rescue the jedi on Kuat or any planet that they were stationed on.) Once Iron Caught wind of order 66 being activated. He decided to active Operation Rubicon to his personal 264th Company: Steel Company and several High Ranking Soldiers where they would proceed to kill all remaining Imperial loyalists and wipe them off the planet. Iron would then form the Iron Republic after the operation was a success

Post Operation Rubicon
When Palpatine realized that Iron betrayed him. He sent his Apprentice Darth Vader and the 501st Legion to finish what the clones stationed on Kuat started.

Timeline Z865
In this Timeline Soloman was apparently incharge of a company named Zealot Company which was in the 501st Legion within Executive Battalion