Milhouse

"Everything's coming up Milhouse!"

- Milhouse's unlock message.

Milhouse Van Houten is the second child character to be unlocked chronologically in The Simpsons: Tapped Out, preceded by Lisa, and followed by Bart and Martin. He is also the first character to not have any voice actor.

Simpsons Wiki Description
Milhouse Mussolini Van Houten is Bart Simpson's best friend. As the only child of Kirk and Luann Van Houten, Milhouse's most distinctive physical traits are his extreme nearsightedness (depicted by very small eyes), requiring thick glasses to correct, and a huge nose about the size of a softball. Milhouse could qualify to be overweight because in Bart Star after he stopped sucking in his stomach it came out hugely.

Despite being considered a nerd, Milhouse is of average intelligence (IQ ~100) but has poor social skills. He is also very gullible, thus he is constantly led into trouble by the mischievous Bart, who is not shy about taking advantage of his naive, trusting and loyal friend.

Trivia

 * Originally, Milhouse was the only character in the Kids collection. This was perceived as a joke on Milhouse's social exclusion. However, when Martin Prince and Ralph Wiggum were released, they were added to the collection as well.