In this MUGEN video, several characters converted from their NES games duke each other out.
Doropie/Francesca (Magical Kids Doropie/The Krion Conquest) VS. Cutman (Mega Man 1)
Samus Aran (Metroid) VS. Famicom Wars (Famicom Wars)
Luigi (Super Mario Bros. 3) and Kantaro (Tōkaidō Gojūsantsugi) VS. Ninja JaJaMarukun (Ninja JaJaMarukun) and Kunio/Alex (Downtown Nekketsu Monogatari / River City Ransom / Street Gangs)
The following is a list of characters with the names of their authors next to them:
"Samus Aran" by Keyu
"Kunio" by MASA
Everyone else by SUGIO (some unsigned)
The following is a list of stages with their authors names next to them:
"Urban Champion Downtown" by DRACUL
Both "Cutman's Stage" and "Famicom Wars" by SUGIO