Color: Green and Orange-Yellow
Gender: Male
Catchphrases: "I'm a Rumblin' and a Tumblin'!", "Rollin' and tumblin', tumblin' and a rollin', rollin' and a tumblin'..." (UK) and "I'm a rollin' and a tumblin'..." (US)
Voiced by: Rupert Degas (UK) and Vincent Marzello (US)

Tumbler is a cement mixer truck. He is the loudest machine on Bob's team. Tumbler is big and can do big things that Dizzy can't.