Jerry's partner is BEN and Tom. BEN is a three-letter word and Tom is also a three-letter word. BEN and Tom are both characters from the popular American comic strip 'Tom and Jerry'. The strip follows the adventures of a cat named Tom and a mouse named Jerry. Tom is always trying to catch Jerry, but Jerry is always one step ahead. BEN is a bulldog who often helps Tom in his pursuit of Jerry. Tom and BEN have been friends since the strip's debut in 1940.