LadyDevimon is a Dark Spawn warrior princess, and is one of Daemon's elite corps in the Dark Spawn army. She has not appeared yet to challenge Spongebob and his friends.
LadyDevimon was one of Piedmon's most loyal minions. LadyDevimon is Piedmon's personal bodyguard, and an extremely dangerous Digimon at the ultimate level. As Taichi "Tai" Kamiya and his group approached Piedmon's observatory base, LadyDevimon asked if she could be allowed to "punish them". Piedmon agreed and she flew off to battle them at once. The DigiDestineds' Digimon took her on with help from Andromon but Tai decided to have Sora Takenouchi and Takeru "T.K." Takaishi leave the battle to get Yamato "Matt" Ishida and the others while Angewomon battled LadyDevimon, which quickly became a bitter, and somewhat comical, cat fight between the two enemies, Tai, Izzy and Andromon were infatuated with the fight but Kari took it a little personally. LadyDevimon nearly won when she tossed Angewomon to the ground, but when she tried to finish her off MegaKabuterimon blocked her attack, resulting in her spike breaking, after which Angewomon obliterated LadyDevimon with her Heaven's Charm attack.
Digimon Adventure 02
One of three servants of the Dark Lord Daemon, LadyDevimon arrived in the Real World on the night of December 25, only to start attacking the next day. She would encounter Aquilamon and Angewomon (whom she got into a slap-fight with, though this was cut from the English dub). She only retreated when WereGarurumon and Garudamon arrived.
Later she resurfaced and tried to take Ken from the grasp of Yukio Oikawa. She continually batted the truck with beams from her eyes, making Oikawa call her a "pain". She was relentless on her mission, only she had Silphymon to deal with. Their battle was tremendous. However by sunset, LadyDevimon got the upper hand and took one of the teenage boys that had gathered around the area where Silphymon had crashed due to the beating it had taken, as a human shield to keep a battered Silphymon from fighting back. But Yolei, annoyed, hit LadyDevimon in the back with a skateboard, causing her to drop the boy. When asked why she was doing this, LadyDevimon laughed and explained that she enjoyed making others suffer. She then lunged at Yolei with the intent of ripping her to shreds, only to force the Aquilamon side of Silphymon to break his promise and kill LadyDevimon.
Role in the series
LadyDevimon is currently a no-show character and it is unknown when she will appear at all.