Pumbaa is a warthog living in the Pride Lands. He only appears in Kingdom Hearts II.
He grew up in the Oasis with Timon and Simba, and together lived a worry-free life until Nala found Simba and tried to convince him to go back to the Pride Lands with her. With the help of Sora, Donald and Goofy, he and Timon pull together their courage to help fight Scar's hyena army.
He usually has a very little heart and is not much of a fighter, but whenever his friends need help, he would do anything in his strength to help, even when fear is overwhelming him.
Pumbaa and Timon often say the motive Hakuna Mattata, means no worries.