- Proto Man. When you reach the end of Proto Man's castle, you'll be weakened to your last hit-point, Proto Man then shows up, saves Mega Man, reveals the other Proto Man is simply Dark Man 4, and he gives Mega Man an L-Tank.
- Dr. Cossack gifting Beat to Megaman as an apology for what happened in the previous game.
- Dr. Cossack's assistance in general, really. Mega Man is stated to have the general intelligence of a child. Having your parents (or parent in this case) suddenly stop being around can be a very frightening experience, leaving Megaman and Roll alone with Rush. Dr. Cossack however comes through as a person to repair and care for them in Light's absence.
Heartwarming / Mega Man 5