Sumu is not a reckless attacker which is revealed when he questioned why Scar wanted the Lion Guard to know he was behind the scheme. He is also dangerous and powerful which is proven when he nearly killed Simba with just his stinger.
Role in the series
When Scar introduced Sumu to his army, Janja jumped onto Reirei and Kiburi until he revealed to him that he was not going to go after him but rather to go after Simba. Scar then orders Sumu to take down Simba on the day he defeated Scar. Later that afternoon, when the Pidelanders sing "Good King Simba", he stings him in the tail, which knocks him over and nearly kills him. He then scurries for the Outlands and is chased by the Lion Guard until he escapes through a tunnel that leads to the Outlands. He later reports his success to Scar and Ushari, being praised for his deed with Scar saying "You've helped me set the perfect trap."
- He is the first scorpion in The Lion King franchise.
- "Sumu" means "poison" in Swahili.
- His voice actor Ford Riley is also the director of The Lion Guard.