- PLEASE NOTE: This episode is the 39th episode in the Japanese version, and is listed to reflect that.
Guess Who's Coming to NetBattle! is the 48th episode of the MegaMan NT Warrior anime. It originally aired in America on December 2, 2004. In Japan, this episode is named Pretty Pretty Princess! (ぷりぷりプリンセス! Puripuri Purinsesu!) and is the 39th episode in the season, originally airing on December 2, 2002. It features the debut of Princess Pride and KnightMan.EXE.
“Lan Hikari and MegaMan.EXE are about to face off against a really cool NetBattler named Whip and his NetNavi KnightMan! Only at the last minute, Whip runs off, chased by four mysterious women in black. Lan helps Whip escape, and they spend the day together touring the city. But it's not just a walk through the park. Not only do they have to avoid the mysterious women in black, they also have to fend off an attack by ShadowMan.EXE (sent by FreezeMan.EXE), who wants to steal KnightMan's special anti-virus program and delete him for Grave! Plus, Lan learns that the boy he's been hanging out with all day is actually a girl! Whip (who's really Princess Pride, although Lan never suspects it) reunites with her royal family but pledges to come back one day and finally finish her NetBattle with Lan.” 
Guess Who's Coming to NetBattle! vs. Pretty Pretty Princess! - Differences between the dub and the original version.