Expunged failed sons that he despises. [Ex-sf] Expunged wanted to make a being that would help him with his plans, trying to make him look like a bambi minion but he accidentally made him it have the same face as him. That made him upset so he called him Ex-sf. Sf standing for "stupid face".
[Bombe] Expunged wanted to make another being that was similar to Brobgonal but it ended up looking more like Bandu, plus he accidentally colored him wrong and messed up his face. He didn't like it so he named him Bombe because it sounds similar to "ugly".