I saw it in 2017 on TV, the movie is probably american, English, must be newer than 90s, sci-fi category, color.
Black, slim full body and helmet suit humanoid (may be alien) is placed inside a glass enclosed laboratory, probably underground in area 51. The subject just stands and does not move, looking through the glass at the people who are trying to study it. They then send a lab worker into a containment room, and without moving, the subject kills the lab worker though some kind of unknown power. The subject then is able to break through the containment glass, again, without moving. The scene then later shows military zeroing in onto the bunker, but the chaos ensues and from the bunker, the black alien is able to withstand heavily armored military machinery