Spoilers Off applies to all Heartwarming pages, so all spoilers are unmarked. You Have Been Warned!
- The ending of "Cold Steel" with Gemini Man, Gyro Man, and Spark Man declaring each other friends.
- Mega Man and future Proto Man's conversation in "Future Shock".
- Proto Man and Snake Man saving Roll in "Robosaur Park".
- Ring Man and Magnet Man taking Proto Man out on the town in "Robosaur Park" and their conversation with him. Doubles as a Funny Moment."You're a good kid, Proto."
- Mega Man and Time Man becoming friends in "The Mega Man in the Moon".
- Wily regaining consciousness and comforting an anxious Proto Man in "20,000 Leaks Under the Sea".
- Proto Man's general behavior towards his sister Roll counts as this, as she is one of the few people towards whom Proto shows (in his own way) patience and affection.
- At the end of Bro Bots, Proto Man absolutely loses it when he believes Mega Man is about to die because the scrambler chip Proto had planted on him had a virus. He displays genuine fear and regret and earnestness and even tears out his helmet, allowing Mega Man to look into his eyes. Fortunately, Mega was just faking it in order to get close enough to him to copy his weapon. The incident marks a turning point in their relationship, and it proves that Proto cares deeply about his brother.
- Proto Man and Elec Man' relationships has blossomed into a touching friendship by the end of the second season.