Are all the names that are right underneath the characters picture on the right all alter egos or just the names used and not per se alter egos like maul has darth maul and maul and palpatine has darth sidious and sheev
Usually if its a Darth its their sith name, like Darth Bane is not his actual name its Dessel. Sith change their names once they become a sith so the name below is their actual name while they are a Sith but you have to read their lore for their real names.
^ No when sith change into sith they are no longer the person who they used to be, thats why people call the death of vader, the death of Anakin, there are really no alter egos unless its a bounty hunter like when Kir kanos was a bounty hunter his name was hunter kilix kil, that was his alter ego but jedi and sith don't have one.