Mega Man/Shout Out


 * Mega Man 9 features a shout out to the original in Dr. Wily's Swiss Bank Account number (19-871-217). December 17th of 1987 is the release date of that game.
 * Another shoutout appears in The Wily Wars for the Sega Genesis, to of all things Sonic the Hedgehog. During the outside portions of Mega Water S's stage, a green, grassy island with waterfalls can be seen in the distance, which bears a suspicious resemblance to Green Hill Zone from the first Sonic game. More blatantly, you have the bosses (referred to as the 'Genesis Unit' in later Capcom materials) of the Wily Tower section themselves, Hyper Storm H, Buster Rod G, and Mega Water S, who are a combined shoutout to Journey to the West.
 * Starting from the fourth game, Mega Man Battle Network also had a close relationship with Boktai, from optional quests in the Battle Network game to actual crossover minigames obtained by linking the Battle Network game with the Boktai game. This material was stripped from the US translation of Battle Network 6 after the relative flop of the Boktai games in the US, leading to fan outcry (to give you a scope -- two secret chips, six Navi (summon) chips, an optional boss, and an semi-secret area with accompanying Sidequest were cut out of the game).
 * This Troper remembers the "All Your Base Are Belong To Us" meme being referenced by one of the altered programs in ElecMan's area in the first game. At that time, the altered programs and their hidden faces were SERIOUS NIGHTMARE FUEL for him.
 * This one, to be exact.
 * After a certain plot event in Mega Man Battle Network 4, a visit to the haunted house in the real world results in a meeting with a stubble-bearded man with a sun-themed bandanna, who gives the player the code for the Battle Chip "Gun Del Sol EX". The man is actually intended to be Hideo Kojima, creator of the Boktai series (and the Metal Gear series, hence the impromptu Solid Snake cosplay), where the Gun Del Sol functions as the main character's weapon.
 * In Mega Man Powered Up, the robot masters have incredibly quirky personalities, kind of like Bob and George.
 * Mega Man Star Force has an Easter Egg where if you put a Mega Man Battle Network cartridge into the GBA slot, then an event with Rockman.exe would occur. Complete with Time Travel (Star Force is 200 years after Battle Network).
 * In Mega Man Star Force 3, Geo's class has pet earthworms. The name of Geo's earthworm is James.
 * Fans have noted that the wing bits on the Black Ace form from Mega Man Star Force 3 superficially resemble those of the Freedom, and during its Limit Break attack, it sprouts energy wings that are identical to those found on the Destiny.
 * And again with the Gundam Shout Outs: Mega Man X performing the Shining Finger in the Day of Sigma OVA (X and Domon even have the same voice actor!). Both Mega Man and Gundam fans didn't miss the chance to spam this one...
 * The Street Fighter Easter Eggs in the first two Mega Man X games. X could get the Hadoken (X1) and Shoryuken (X2) from a gi-clad Dr. Light by performing certain feats. These move were executed the same as in their game of origin (with Fire substituting for Punch), and could kill anything in one hit. X had to be at full power to use them.
 * Then there's Akuma Magma Dragoon, who wears humongous prayer beads around his neck, does the shoryuken, the hadouken and did some pretty questionable things just to fight X.