Nitron

Nitron (ニトロン) is a flying eye-like enemy in Mega Man 3. It is in the first section of Gemini Man's stage (the surface of the space glacier), both regular and Doc Robot. When Mega Man is close, it swoops down and drops three fireballs that spout into small flame geysers, a little bit like what Flame Blast does later on in Mega Man 6. It is especially annoying when trying to jump over a hole as they will knock Mega Man right into it.