Looking for an mid 90's s-f movie.
Hello, since few days I am trying to find a movie which I had watched in my childhood. The genre is science-fiction I guess, not sure about it - the 'plot' was about people who possessed an ability to turn into creatures, there were 2 groups of them, one good and the second was obviously made from bad ones. The bad group was searching for something and the last thing I recall was final fight (yea, there was a lot fighting in this movie, karate like) in a spaceship (buried - not sure - in earth) and the good guy gained some ability (which changed his creature-like appearance) from it and somehow managed to kill the 'last bad guy'. Those creatures looked like humans in armors with some animal additions - I am sure that one of the bad ones looked like a rhino, I mean he had a horn. I will be very grateful for any help, thanks.