Donjon Crépuscule Series by Joann Sfar, Lewis Trondheim, Kerascoët

The planet Terra Amata, on which Dungeon resides, has stopped turning. On one side, total darkness and absolute coldness; on the other, a searing desert and eternal day. The survivors live on a thin slice of earth where day and night meet. A territory known as TWILIGHT. Marvin, now old and blind, sensing his end, goes on a long trek to the legendary cemetery of dragons.

Marvin, saved at the last minute from certain death in a duel by his young warrior admirer Marvin the Red, simply cannot be let to die like he wishes!

The next 2 chapters in the decline of Dungeon. Terra Amata has exploded and the Dark Fortress of the Grand Khan needs to master the nitro tech. To that end, they hire Marvin the Red even as others plot malevolently…In the second episode, Marvin the dragon and Marvin the Red are trapped on a quickly revolving piece of the exploded planet, and must constantly run or fall off into oblivion!