fanarts in helluva boss community

Okay, last time many of you figured out who Octavia was cosplaying. Now here's a new cosplay of the little imps Millie and Moxxie, the question is: Who are they cosplaying together, and the art itself refers to a scene from a certain (hint) cartoon?

Wallpapers for your phone with Belphegor | Helluva Boss

Helluva Boss on the contrary 2

Vivziepop Movie/Cartoons

Helluva Fortress 2

Stolas practice art

Just a small practice piece to break my art block. :P

The Blitzø Prototype

I.M.P The beginning

Work proactively | Mini comics by Helluva Boss

This time, guess who Octavia is cosplaying?