Wiley is a smart kid. Like Ernie, he has had 2 puppets.
- Wiley only appeared in volume 1, while his alternate version appeared in volume 6.
- He was replaced by Trevor in volume 2, however, returned for volume 6 with a new puppet.
- In volume 1, he has an unique voice. In 6, he gets a more generic sounding voice. This is due to the audio being reused from the original O song.