Toli is a black, grey and white-coloured German Shepherd. He has grey fur with white cheeks, chest, belly, legs and tail. He has black markings around his muzzle. He also has many small scars on his face and body. There are two scars next to his right eye, and one on his back.
- In volume 48, on page 76, he calls himself Second Lieutenant Lukov. And on in volume 51, page 90, he refers himself as Toli, as well as Maxim calling him by that name.
- Because of this fans believe his full name can be Toli Lukov.