Rikuo's Night Warriors: Darkstalkers Revenge ending. Before Darkstalkers 3, Rikuo and his wife Aqueria had 3 sons (one being Alba, Ricky in the west) and 12 eggs waiting to be hatched.

If you're a fan of Darkstalkers and you want to help nag at Capcom to bring back the serious, you should join Capcom's forums and tell them. People are mostly leaving comments on the HD Remix thread which is pretty much the general "I want a new Darkstalkers" thread, so don't let the name fool you. Here is the link:
http://www.capcom-unity.com/ask_capcom/go/thread/view/7371/18569387/Any_Chance_Of_A_DarkStalkers_HD_Remix_Capcom

Help Ono-san make a new Darkstalkers:
http://www.capcom-unity.com/capcom_games_discussion/go/thread/view/7341/13110251/Help_Ono-san_make_a_new_Darkstalkers_game.

Darkstalkers are properties of Capcom. This video is not for profit and is simply here for fans to enjoy.