Pluto Junior is one of the fun-loving children of Pluto and Fifi. Originally a unnamed puppy, who debuted in Pluto's Quin-puplets, Pluto Junior is by far the only one of his four siblings, to have a name.
Pluto Junior's design is much like Pluto Senior's, though basically a smaller version of Pluto. Though Jr has a more circular head, and is chubbier. Almost all other things has him resemble his father. Jr's ears also droop down starightly, and of course are much shorter.