Recommended to King Harold by Doris as a famous ogre assassin, Puss is hired by the king to assassinate Shrek. However, unlike his fairy tale counterpart, he does not try to trick the ogre into changing into a mouse, but instead makes a direct, frontal assault on Shrek, which works up until the feline gags on a hairball, spitting it up. Shrek and Donkey think of what to do with him as Donkey even proposes to give him the "Bob Barker treatment", but the swashbuckling cat begs for his life. Puss claims to have taken the contract to help his poor family, consisting of a litter of siblings, a sick mother and a father who lives off garbage. Ultimately, they spare his life, and Puss proposes to the ogre he owes a life debt to him, in thanks. Although there is some tension/rivalry between Puss and Donkey (who seems nervous that Puss is taking his place as "annoying talking animal" and as Shrek's best friend), the three eventually become close friends and allies. Shrek appears to have accepted this debt, as Puss in Boots stays with him throughout the course of the film. He has also stated that he "hates Mondays". When Shrek and Donkey enter the castle to find Fiona and are being chased by the castle's knights, Puss repays his debt to Shrek by holding them off. After Shrek and Fiona get back together, and the king turns back to a frog, Donkey finds out he has become a dad. Due to the friendship that has developed, Puss decides to be Donkey's Dronkeys' uncle.