|This is the character that was introduced in Angry Birds on The Run, to see his Movie counterpart, see Leonard Mudbeard|
Voice Actor: Baker Terry (English)
As Red, Chuck, and Bomb find the phone to return from their world, Leonard and his minions show up from a trash can, and their goal is that the birds don't return to the phone so they steal it to the docks.
As the pigs got the phone they decide to take some selfies of themselves before a seagull comes in and steals the phone, but they eventually get it back and declares that now they are going to destroy the phone.
The start to destroy the phone, upon to no avail, but they are confronted by Red, Chuck, Bomb, a dog, and the two humans, and they attack but Leonard decided to smash the phone by jumping off the table, but Chuck stops him, but Leonard decides to simply throw it in the ocean, but he sees that the birds figured out another way back, leaving him shocked.
As part of The Angry Birds Movie 2 event, Leonard was introduced into the game as an Extra "Bird" alongside Stella, Hal, and Bubbles. His ability in this game is to launch a ball of snot at his target, which then sends him flying in the opposite direction (like Hal). This is similar to Matilda's egg-laying ability, with the key difference being that Leonard's ability can be aimed in directions other than straight down. Additionally, Leonard can use this ability three times. However, he instantly pops upon collision, likely referencing the other pigs. As with the other Extra Birds, he has his Unlocking Event in which he automatically becomes playable after six days but can be unlocked sooner if the player collects 60,000 Snotty Feathers.
Leonard appears in the Prank War Tournoment as a boss. He has a new appearance in this game, making it more close to his movie appearance and not close to normal pigs, different from the other designs. He also often appears with his crown and/or binocle.
He is a hard to defeat boss like the other boss pigs, but he doesn't need to be defeated to complete the level.
- Despite the character being called Leonard in On the Run, it is the classic King Pig plush they used for him, instead of the more accurate version of the character.
- Leonard's ability in Angry Birds 2, is similar to Matilda's egg-laying ability, with the key difference being that Leonard's ability can be aimed in directions other than straight down and can be used three times