Larry is a shrew agent of D.O.O.M. and Snaptrap's brother-in-law. Larry's constant abuse by Snaptrap—which includes being shot, thrown in the shark tank, or used as a basketball—is a running gag in the series.
Larry is seen as somewhat of an underdog in this series. Most of the things that he says or suggests to Snaptrap usually result in him being yelled at or punished. Because of this, Larry is rather bitter towards his boss, and will take many opportunities to give him backtalk and complain about the trouble their team goes through. Nonetheless, he appears to enjoy being a D.O.O.M. agent and likes causing misdeeds in Petropolis. He has a little bit of a temper and doesn't usually have very much patience for incompetence, but that doesn't mean he himself is above doing silly things or making mistakes.
He is also shown to be a very skilled leader, such as when he formed his own agency called G.L.O.O.M., which was actually much more successful then D.O.O.M. and many other villains' attempts to commit crime. A big part of his agency's temporary success was the fact that he was smart enough to not tell T.U.F.F. his plans, which is something that Snaptrap and other villains are well known for doing. However, it was thanks to Snaptrap that his plans were foiled. Also, judging from the title of his his former G.L.O.O.M. agency, it would appear that Larry thinks very highly of himself, with "Genius Larry's Order Of Mayhem" in the title.
Role in the Series
Larry is an accident-prone D.O.O.M. agent who is constantly suffering abuse from his brother-in-law, Verminious Snaptrap. However, he rebels against D.O.O.M. in Doom and Gloom by making an agency of his own, called G.L.O.O.M (which stands for Genius Larry's Order Of Mayhem), but he eventually joined back with D.O.O.M. at the end of the episode. He is usually seen being thrown in the shark tank, or used to create a lot of weapons for D.O.O.M., although later in the series he hasn't. Larry has also starred in the game T.U.F.F. Puppy: Unleashed. His special power is to heal any player of choice (on D.O.O.M.'s side however). He could also throw muffins at an enemy.
Relationships with other Characters
Larry and Snaptrap almost never get along with each other, with Larry considering him a "big stinky bully." Snaptrap has a great hatred for Larry and is constantly bullying him. He tends to hurt Larry when he backtalk's or fails him, but he also likes to punish him for his own personal amusement, in which he takes great pleasure. Larry usually likes to tease Snaptrap when he gets the chance, and when he was in charge of G.L.O.O.M., he enjoyed leaving messages on Snaptrap's phone, in which he mocked him and gloated over his agency's success compared to D.O.O.M. It is unknown why Snaptrap hates him so much, but it may be due to the fact that Larry is married to his sister.
Olie and Francisco
Larry seems to have a good friendship with Francisco and Ollie, and they are both loyal to him (such as in Doom and Gloom). However, before joining his G.L.O.O.M. agency, Ollie and Francisco were willing to throw sticks and stones at him under Snaptrap's order. They both appeared to get along with Larry after they joined him, though.
Larry was nicer to Keswick than any of the T.U.F.F. agents in Snapnapped, but they still seem to hate each other afterwards.
Dudley, Kitty, and The Chief
He views all of them as enemies more than Keswick.