Boss fight from one game appears in another game as an optional boss, probably due to nostalgia or tradition.
http://tvtropes.org/pmwiki/pmwiki.php/Laconic/LegacyBossBattle
FollowingLaconic / Legacy Boss Battle
Go To
http://tvtropes.org/pmwiki/pmwiki.php/Laconic/LegacyBossBattle
FollowingGo To
Boss fight from one game appears in another game as an optional boss, probably due to nostalgia or tradition.