Spindle is a pet dog and a member of the Justice.
Mel No Tabidachi
He has a good relationship with Alexander and lets him ride on his back while the Justice are in operation. During the attack against the criminals, Mel saved him from being hacked by an axe. Spindle's owner calls him Hulk (jap. ハルク).
- Some fans believe Spindle is a Great Pyreneese, but nothing confirmed.