Even though he makes no effort to hide his face, Underdog's real name is not known. He has all the powers of Superman. But only about 3/4 the might or intensity. He also can not use his full strength for more than a few minutes. But he can use his powers at a much lower level all day.

When he is exhausted, so are his powers.

UnderDog is an older teenager, who only wants to do the right thing. Still a bit of a klutz, he does cause some property damage. This is usually when he is flying and not paying full attention. He is rarely seen flying except to and from the scene. He is a bit goofy and nerdy, and obviously VERY "aware" of girls. Thus when Rae shows up he acts very unnaturally uninterested in her.. because, as you can imagine, he wants to jump her bones. But being the Good-guy, the Hero, and always mindful of the law and manners, Underdog does not.

As UnderDog grow older, he is becoming more powerful and able to sustain his full strength for longer. Eventually he grows up into "Ultimate Dog" and leads other heroes as the defender of his world.

UnderDog tries to develop a relationship with Sweet Poly Purebred, but gives up on it when he becomes very aware that she is focused on her career more than being his friend.

And the theme lyrics...

There's no need to fear! Underdog is here!

when criminals in this world appear
and break the laws that they should fear
and frighten all who see or hear
the cry goes up both far and near
for Underdog! Underdog! Underdog! Underdog!

speed of lightning, roar of thunder
fighting all who rob or plunder
Underdog. Underdog!

when in this world the headlines read
of those whose hearts are filled with greed
who rob and steal from those who need
to right this wrong with blinding speed
goes Underdog! Underdog! Underdog! Underdog!

speed of lightning, roar of thunder
fighting all who rob or plunder
Underdog. Underdog!