Liagiba Sumixamtakdam (nicknamed "Sumi") is Mad and Abby's fifth child. Out of all their children, she is the most demonic and has committed the most crimes. Even at a young age she was more trouble for her parents than Faeh and the twins combined.
- Burning down the White House and assassinating the president
- Kidnapping Epar
- Breaking into Virus and Trip's hideout and stealing their equipment
- Killing a lot of random citizens
- Vandalizing several hotels and homes