Donald Jay Rickles (1926-2017) was an American comedian and actor, a pioneer of insult comedy universally known by the ironic nickname "Mr. Warmth." His career took off in the nightclubs of Las Vegas, where his sharp wit and irreverent improvisations made him a legend, earning him the favor of stars such as Frank Sinatra. He became a frequent guest on *The Tonight Show Starring Johnny Carson* and the Dean Martin Celebrity Roasts, solidifying his fame nationwide. His film career includes memorable roles in movies such as *Kelly's Heroes* (1970) and Martin Scorsese's *Casino* (1995). To wider audiences, he is known for voicing the character of Mr. Potato Head in the *Toy Story* animated franchise. His accolades include a star on the Hollywood Walk of Fame and a Primetime Emmy Award, which he won in 2008 for the documentary special on his life, *Mr. Warmth: The Don Rickles Project*.