Bob Unit 4 is From Shutterstock.
Appearence
He is a Yellow Tubby That has a Stitch on His right side Like Bob Unit 1.He most likely to have a robotical arm it was revealed at episode 5.
Train Form
He is a 0-6-0 engine form thai is painted yellow and is number 14 and has a tender.
Episode Appearence
- Episode 1 (Mentioned
- Episode 5
- Episode 7
- Episode 10 ( Does Not Speak)
- Episode 14 (Cameo)
- Episode 15 (Death)
- Episode 18 (Revived)
- Episode 20
Trivia
- He has is own Branch Line
- He and Bob Unit 3 had went to Istanbul