Penny Peterson is a character from Mr. Peabody and Sherman.
- Penny is the cousin of Pajama Sam
- She is voiced by Ariel Winter, who also does Sofia.
- Penny will meet Dipper & Mabel in Dipper & Mabel meet Mr. Peabody & Sherman.
- Penny will meet Tino Tonitini, Twilight Sparkle, Littlefoot, Doraemon, and their friends in Weekenders Meets Mr. Peabody and Sherman.
- Penny will join/meet Barney and Friends, and join the backyard gang, in Barney's Adventures of Mr. Peabody and Sherman: The Movie.
- Penny is one of Robby's old classmates.
- Penny will meet Winnie the Pooh and friends in Winnie the Pooh Meets Mr. Peabody and Sherman.