spoilers for The Bad Batch
In Jedi Night in season 4 of Rebels, Thrawn reveals to Hera that he knows, from her kalikori, that she had a brother who died when he was young. This is a minor detail, but one that never comes up again. Hera doesn't mention her brother when Omega tells her about her own clone brothers in The Bad Batch, and in the novel Lords of the Sith Cham Syndulla never talks about his son. Do we have any information in the canon about her brother, or is it just what we have in Rebels?