Kotaku: Amingo was an original character introduced in Marvel vs. Capcom 2. He was part of a gentle race of plant people. He was good and he was my friend. Capcom killed Amingo in Ultimate Marvel vs. Capcom 3, and I will never forgive it.
Source: N4G PC I Will Never Forgive Capcom For Killing Amingo In Ultimate Marvel vs. Capcom 3