A dragon-cycle is an interdimensional creature that is a hybrid between a dragon and a motorcycle. As such, they have the ability to both fly like a dragon and ride along the ground on their wheels like a motorcycle. They can also be domesticated and ridden by their owners in both of these fashions.
Dragon-cycles come in various different sizes and colors, but have the same basic anatomy. They have the body of a dragon, with two wings on either side. Between their hands and feet they have large wheels which can roll along the ground; although rare, they can detach the wheels from their limbs. Their horns function the same way the steering handles of a motorcycle work.
- It is unclear which dimension they originate from, since such creatures live in various dimensions, such as Dimension X-103, where Nachos comes from, and Mewni, since they were among the creatures that were seen following the merging of Earth and Mewni in "Cleaved".
- Kelly's dragon cycle appears to be from her own dimension as it is covered in Woolett hair.
- It is possible that dragon-cycles have an extremely long lifespan, as Nachos shows no signs of aging despite living in the extreme time dilation of Dimension X-103.