Big Pets (ビッグペッツ Biggu Pettsu?) is an amusement park guide robot that was modified by Dr. Wily, appearing as the boss of the Wily Stage 1 from Mega Man 5. It shoots enemies from its head in varying patterns, and if a section of its body is shot, it launches toward Mega Man. Its large head is the weak spot, and Crystal Eye is the best weapon to use, as well as charged Mega Buster shots. Big Pets can only be harmed while its eyes are open.