- Born on Kessel
- When the Mandalorian Wars began when he was 2, the Mandalorians invaded Kessel, killed his parents, and put the people of Kessel into servitude
- Never learned his full capabilities of shapeshifting
- Was taken care of by an Ithorian ship mechanic named Heebos and an Ishi Tib chef named Ranaa
- When he was 7, the Jedi and Republic military came and liberated Kessel from the Mandalorians
- However, when he was 8, the Jedi Civil War broke out, and Czerka Corporation used the opportunity to enslave the people of Kessel
- Worked as a slave in the mines
- Was mistreated horribly by many who ran the spice-mining operation, but he reserved most of his hatred for Zygerrian senator Kijho Nexil who ran cover for the operation in secret, Lannik overseer Jenik Vincus who was put in charge of the Kessel operation by the Czerka Corporation, and Gamorrean enforcer Hoogus Grelen who took intense pleasure in torturing the slaves (especially Ato who he called ugly)
- When he was 15 one of the other slaves, a former Mandalorian Neo-Crusader named Gexus Naar, recognized his race and told him he could shapeshift
- Learned to shapeshift and eventually managed to escape the mines when he was 16, at the end of the Dark Wars
- Vowed to free other slaves from the mines and to take revenge on those who wronged him
- Looked for a ship and managed to get smuggled off Kessel by a Rodian master Pazaak player named Veeloo Jaa, who was secretly an exile Jedi who had left the order after fighting in the Mandalorian Wars, as he had felt participating in the war had betrayed Jedi values
- Veeloo taught him Pazaak, and he realized he could make money by cheating in Pazaak and constantly changing personas so not to gain a reputation
- Made money from gambling and returned to the spice mines consistently to buy slaves (especially families) and free them
- Bought slaves under different personas so as not to draw attention
- Eventually realized that he needed to find a more permanent and large-scale solution to free the slaves
- Learned that Nexil's most prized possession is an extremely valuable legendary xantha
- Plans to eventually steal it and expose Nexil's involvement with slavers
- Now looks for more opportunities to make money

Ato wants to make as much money as possible by cheating rich, corrupt players who take advantage of slave labor and use that money to free slaves in the spice mines he grew up in. He is also eager to seek adventure and explore the galaxy since he has escaped the mines.

Ato also wants to take revenge on Senator Kijho Nexil by stealing his legendary xantha and exposing his ties to the slavery on Kessel, hoping to reveal the crimes there to the Republic.

Mentor (15): Ato feels a sense of obligation towards Veeloo Jaa, who helped him to escape Kessel and taught him Pazaak. Ato does not know that Veeloo is secretly force-sensitive and has been a Jedi in exile since the end of the Mandalorian Wars.

Always changing
Age 25

Base appearance:
Bald, green skin, yellow eyes, 5'8", 150 lb

Rodian appearance:
Short ridge of spines, average-sized antennae, green skin, dark blue eyes, slightly-narrow head, green scales, 5'10", 150 lb