Porter is a kind and helpful engine that works with Salty at the docks. He has a good sense of self-confidence and does not worry about what other engines say about him, such as calling him a ‘camel’ because he has so many ‘humps’ (domes). Porter is not above engaging in a bit of friendly dockside banter himself, but when another engine is feeling low he can be very supportive. Porter’s easy-going manner makes him very popular. He is a hard worker, although he can be a bit of a perfectionist at times. He is also very brave and can keep his head cool in a crisis.