Flash (known as Furz in the US dub) is an anthropomorphic rabbit, who likes to cause trouble on the track. He commonly teases or otherwise acts maliciously towards the cars, such as tricking Maxi into sacrificing his fuel so Flash could use it for his skateboard, but it normally backfires in the end. In other cases, Flash can be the source of temptation for the cars in some episodes like "Putting on a Show," where he convinced Roary to go for a practice lap before the big show, even though Roary was told that he shouldn't and he gets on everyone's nerves, especially Mr. Carburettor's, but makes up for it in the end.