The Abraham Lincoln Pen (also reffered to as Little Lincoln or simply Abraham Lincoln) is a con artist, his only appearance being "Emancipation Complication". He lives in the pocket of a big, burly imaginary friend named Moose who serves as his bodyguard, due to his small size.
Abraham Lincoln appeared in "Emancipation Complication". At first, he seemed like a poor imaginary friend created to cheat. But it turned out he was really a con artist who managed to sell a lot of the imaginary friends for a hefty profit. The friends were promptly put to work doing anything they were told to do (for example, washing cars for people they were sold to). He proceeded to con Madame Foster out of the house as well. He was eventually found out and punished for his deeds.
He looks exactly like a much thinner version of Abraham Lincoln, complete with the trademark beard. Except his stovepipe hat is actually the cap of a fountain pen and he has a pen point instead of legs. He's extremely small, hence the bodyguard.
The Abraham Lincoln Pen is a smooth talker and very good at manipulating people, especially old ladies. The fact that he resembles the 16th president makes it easy for people to trust him. But his main goal in life is to make as much money as possible. Due to his small size, he tries to accomplish that by tricking people into doing his bidding. He speaks with a Southern accent similar to the one usually associated to the 16th president, except when no one is listening. Then he reverts to a Gangster-style stereotypical con artist sort of voice with a Brooklyn accent. It was shown in the one episode he appeared in that he doesn't care where money comes from, as long as he gets most of it.
- Ironically, the real Abraham Lincoln fought to have slavery abolished, yet Little Lincoln was selling the imaginary friends to do peoples' bidding in the same way slaves were sold.