Ah, you can hav had time to find out about them...
Mogarians come from the airless world of Mogar- 'airless' is a collouquialism; there is an atmosphere there but no oxygen. Oxygen is toxic to a Mogarian; even the touch of it is caustic. Mogar is a world rich with natural precious metals but Mogarians rarely venture off-world due to this slight problem of interacting with others.
When they do leave, they wear these sleek, all-over body suits in a brown colour, inside of which is the atmosphere they need to survive. The suits must be complete as otherwise the oxygen would kill them quickly. Because of this, they speak through voice synthisisers built into their chests, so you never hear a Mogarian's true voice.
Mogarians are pacifists; it is never been recorded for one to become a Jedi.
"As it happens," says Majoria, "Persis tried to take them. Ascar intervened to let them through. He has less reason to think the Jedi may try and kill him."
You go on through. Persis is in therw, looking grumpy as ever. Ascar is behind his desk.
"I am surprised to see you still on Malstare," he says. "What rbings you here now?"