Toma, a male Human, held the position of leader for the resistance movement situated on the planet known as Acherin. He was characterized as a tall individual with a completely bald head.
During the period of the Clone Wars, Toma entered into an alliance with the Separatists. Despite this, he collaborated with Senior Jedi General Garen Muln in an effort to broker a treaty. However, the execution of Order 66 resulted in the treaty plans being scrapped. Toma, along with the newly established Acherin resistance, played a crucial role in ensuring the safe departure of the Jedi from the planet to seek refuge on Ilum.
For almost a year, Toma spearheaded the resistance's fight against the Galactic Empire, operating from the ancient city named Eluthan. Towards the end of the resistance's efforts, Toma encountered Obi-Wan Kenobi, Ferus Olin, and Trever Flume. Ferus provided assistance to the resistance's starfighter squadrons. However, due to the overwhelming power of the Imperials, Toma gave the order for a retreat. He then contacted Admiral Riwwel of the Imperial forces, announcing the resistance's surrender. The Admiral, however, deemed the complete elimination of the resistance, through the bombing of Eluthan, as the most fitting punishment. Kenobi, Olin, and Flume aided Toma, along with his assistant Raina Quill, in escaping the planet.
After their escape from Acherin, the group discovered an asteroid situated within an atmospheric storm. They utilized the asteroid and its space shears as a means of concealing themselves from Imperial forces. Toma and Raina remained on the asteroid for several days, sustained by food and supplies, while the others embarked on a mission to locate Garen Muln on Ilum. Upon the group's return with Muln, along with prefabricated shelters and additional supplies donated by Roan Lands, Toma and Raina assisted Ferus and Trever in establishing a sanctuary on the asteroid for survivors of the Great Jedi Purge.
It was later discovered that Toma was, in fact, a mole who had been planted at the beginning of their journey to transmit the coordinates of the secret base. When Raina discovered Toma transmitting these coordinates, he discharged his blaster, resulting in her death. However, she managed to reciprocate, fatally wounding him before she died.