Probe 8201-U type is a hovering platform that slowly moves horizontally or vertically. They appear in the stages of Wire Sponge, Bubble Crab and Crystal Snail in Mega Man X2, Rainy Turtloid's and Secret Lab stage in Mega Man X6, Wire Sponge's stage in Mega Man Xtreme 2 and in some parts of the final stages from the three games.