Proto Shield

Proto Shield, known as Blues Shield (ブルースシールド) in Japan, is Proto Man's shield.

In Mega Man 7, if certain conditions are met, Mega Man can battle Proto Man and, if he wins, he can actually obtain the shield. The shield is capable of blocking some projectiles (but only if Mega Man is still and is not shooting at the time).

In Super Adventure Rockman, Proto Man will drop his shield to save Mega Man from Sniper Joes in episode 2. Mega Man can use his shield if the player finds it by following the flashing arrows that appear in the sides of the screen, first finding a data card with enemy information, and then the shield. When equipped, it reduces the damage Mega Man takes.

In Mega Man 9 and Mega Man 10, the Proto Shield can be used by Proto Man to reflect enemy attacks, but only while he is jumping.

In the MegaMan Battle Network series, ProtoMan.EXE has his own shield similar to his Robot Master counterpart.