Lemmings are the main protagonists in the Lemmings series developed by DMA Design and published by Psygnosis. It starts with the small rodents who are seemingly unlimited in number and have suicidal tendencies such as not being careful walking into traps or hazards. The aim is to guide them to an exit using the correct skills. They aren't mentally or physically strong. They don't feel like they have lots of sense plus they are easily destroyed or beaten up by any type of trap.
Also, they were created by the game designer David Jones and Simon Cooke.