List of only mentioned characters

It's a list of characters, that was only mentioned. Not even a pictures of them appeared.
 * Nigel Mansell (Wheel Nuts)
 * Nico Rosberg (The Rising Son)
 * Gerhard Berger (Lecture Circuit)
 * Cheesy Mcnibblets (Wheel Nuts Behind the scenes extra special)
 * Seth mcfarlens cartoon house of cartoon comedy (failed)
 * Chowder (determinent)