SDK123

Hibiki Kohaku by Ichida.

Phonon by Resentone.

Engima Hyde by Resentone.

Bowser 64 Stages by OHMSBY.

Note from OHMSBY:

Quote

For MUGEN 1.1 and IKEMEN GO only, requires OpenGL to be active. B64S.def only works in IKEMEN GO as it makes use of the Stage Cycling feature.

Bowser by OHMSBY.

2nd file: sff patch file for Mugen 1.0

Lux Lovefellow by Moku.

Boo by DS12.

Gunvolt by k6666orochi and OHMSBY, edited by ZoildSone.

Arcueid Brunestud by Resentone.

Hisui by Resentone.

Iai Arthur by Ichida.

Aoko Aozaki by OHMSBY.

Akira Yuki by Ichida.

Vs. Marx (Marx Stage) by OHMSBY. Mugen 1.1 and IKEMEN GO only.

Marx by OHMSBY. Boss Character.

Noel by Ichida.

Merkava by OHMSBY.

Artoria Pendragon (Saber) by Resentone.

Naoto Kurogane by Ichida.

Vlov Arkhangel by OHMSBY.

Important note from OHMSBY: 

Quote

IMPORTANT: If certain parts of Vlov's Astral heat is not showing or moving properly, then the stage's leftbound and rightbound values need to be increased. Setting the leftbound to -20000 and the rightbound to 20000 in the stage's .def file (both values are normally located under [Player Info]) is recommended, and does not cause any side effects to the stage.

Red Arcueid by Resentone.

Miyako Arima by Ichida.

Asuna Yukki by Ichida, edited by Paulo S.

Super Smash Bros Ultimate - Gaur Plain by Manny Lingle.

Note: This stage will only work for Mugen 1.1.

Pyra by OHMSBY.

2nd file: sff patch for Mugen 1.0.