Over the years Megaman has been one of my favorite video games series.  Megaman 2 is my all time favorite game.  Over these past decades I have created multiple robot masters to challenge Megaman and I thought that I would share eight of them with you. 
Tread-man
-Weapon: Tread Cannon, fires a massize bullet accross the screen, pushes megaman back a bit

Gust-man
-Weapon:Hurrican Gust, full screen blast of air, can control the direction, press up to blow enemies up, press down to crush, etc.

Sphere-man
-Weapon: Bomber Shield, a large shield of bombs circle player, can charge up the shield to detonated all bombs at once.

Tide-man
-Weapon: Tsunami, fills the bottom of the screen with a wave of water.

Scorch-man
-Weapon: Flame Body, turns player into a walking fireball.  Adds fire element to basic attack. Player cannot be hurt by fire while this is active.

Pike-man
-Weapon: Iron Pike,  spear weapon that default attack is spinning attack around player, hold a direction for a direct, peircing strike (8 directions)

Armor-man
-Weapon: Power Suite, clads player in a suit of armor, 1/2 damage, move slower, can't jump, punch in multiple directions, punch is instant kill to all but boss enemies, weapon energy bar acts as life bar for armor

Tape-man
-Weapon: Duct Whip: player has a whip weapon that grabs and throws enemies. While equipped player can climb walls and walks on the ceiling.