Well, in general, they made it clear to us in the cutscenes of the classic angry birds, toons, and in other games besides star wars, they do not kill anyone, the birds just beat the pigs according to the plot.
@@skyshark127 actually Leonard is the main antagonist in the first movie, where he goes to the bird island along with other pigs and tricks all the birds living there to steal their eggs and eat them. He successfully tricks the entire island into giving him their eggs, except the flock (Red, Chuck, Matilda, etc) so when they discover he just wants to eat the eggs they try to get him off the island, they successfully beat him and all the other pigs, and he gives up on trying to steal the eggs, then he befriends the birds and they live in harmony with the pigs, that's why he appears as a playable character in the game
