DAS Commander

Specifically, the 2nd ".zip" version was "fixed" by a certain "Kim@ri7", with the following to say about the fixes:

"This legendary Sentinel has been fixed so that not only do his portraits reflect his in-game sprites, but also that the Captain Commando assist sounds like his original MvC2 self."

Here's a couple download links for Mango Sentinel:

IIRC the first ~25.43 MB ".rar" link is the original version and the 2nd 30.13 MB ".zip" link is "fixed" in some ways by someone else:

https://mega.nz/file/dx1CSI4Q#uWnEU_ZzXkoOzDDRaPEebfUGfJ6LcS0P50etrH_fjuY

https://mega.nz/file/ss0UCCRa#ysnpNZEW3S_z7XgVABWw1_FYkHvzSuzXOYgAQg_Qnaw