Abraham Lincoln

Abraham Lincoln makes his first appearance in the Original Short Adventure Time, where he encourages Pen to believe in himself by warping his brain in the past and to Mars. He is also seen in "Business Time," where he is a character included in a game on Beemo. Since Abraham Lincoln apeared in Adventure Time, and he existed in the past, it could mean that the series takes place in the future.

Quotes
"Pen, your mind has been transported back in time, and to Mars."

"It doesn't matter, what does matter is your need to believe in yourself!"

Trivia

 * Abraham Lincoln (1809-1865) was the sixteenth President of the United States who was a member of the Republican Party. After the Civil War he was assassinated by the actor John Wilkes Booth (who supported the South) at Ford's Theater and died at the age of fifty-six.


 * Pendleton Ward stated on his Formspring that Abraham Lincoln might appear in Season 2.