In the original Mega Man, generators that fire out short beams of electricity appear in Elec Man's stage. The beams fire out horizontally and stretch out at a width of four blocks. This gimmick is named Elec Block (雷放電ブロック? "Lightning Discharge Block" in Japan) in Mega Man Powered Up's Construction mode and Thunder Block (サンダーブロック?) in Mega Man Official Complete Works.
Elec Man's stage once again features Thunder Blocks, but they are changed slightly. Due to the Game Boy's smaller resolution compared to that of an NES, the electricity is made to extend out three blocks instead of four, and it is now possible for a generator to fire beams of electricity vertically in addition to horizontally.
Squid Adler's stage has moving electric hazards.
The Sunken Library has electric cables that electrify the water on contact.
Electricity flows in cables from the Magnetic Zone.
The spinning electrified blades in Area E, along with the metal platforms that descend onto spark plugs when stepped on.
There are electrified floors in some areas that numb Mega Man Volnutt on contact.