Bob Unit 649 is the Hidden Cousin
He is a Brown Tubby that Visits The Bob Units House every Day. He was Dirty From Battling Jerks from The Woods. He Plays Hooky At School.
He is a 0-4-0 Engine with the Number 90.
- Episode 6
- Episode 7
- Episode 10
- Episode 14
- Episode 15 (Does Not Speak)
- Episode 19 (appears as a statue)
- Episode 20
- He was Going To Be Bob Unit 6 But was Now Bob Unit 649