Rasha is a Punaji kid introduced in the beginning of Book 11.
For unknown reasons he fled home, and became an apprentice at the guild.
He befriends Jasmine, Tallie and Darius in the guild, and spends book 11 with them.
It is hinted that he's affeminate and possibly gay, which is most likely the reason he left home.
He often mentions how he has taken many beatings through his life.
He was threatened by a dwarf called ??, who mentioned his sisters. After that he hit him, and ended up in jail.
Style mentions kicking his ass would do no good to teaching him, and that he's smart enough to learn through talks.