Timon and Pumbaa are an animated meerkat and warthog duo introduced in Disney's 1994 animated film "The Lion King" and its franchise. Pumbaa is voiced by Ernie Sabella (in all of his traditionally animated speaking appearances), and was portrayed by Tom Alan Robbins in the original cast of the Broadway musical.

As with many characters in "The Lion King", Pumbaa's name derives from the East African language Swahili. In Swahili, "pumbaa" (v.) means "to be foolish, silly, weakminded, careless, negligent." Pumbaa has flatulence issues but is also a fierce warrior, charging into battle like a battering ram, and taking great offense if anyone who's not his friend calls him a pig, at which point he exclaims "They call me Mister pig!"

More Info: en.wikipedia.org