It's Davis and Colt striking a pose like the Mario Bros.: https://pluspng.com/png-88709.html

This will be the last time you'll see these two until I figure out a new outfit for each of them.

Drawn by Coshi-Dragonite from DA

Original: https://www.deviantart.com/coshi-dragonite/art/Commission-DragomanGod-613183195