|Doom Dome Battle|
|Demon Bounty||Mission Alpha|
|Tree of Life|
Yggdrasil is a boss character in Doom Dome Battle and is upgraded to a playable character in its sequel.
Yggdrasil is a powerful angel who lives in the heavens. She is the angel of knowledge and almost knows everything about every subject but is totally sarcastic about everything, letting people doubting if she is serious or not. She was the one who designed the Garden of Eden and afterwards also the flora and fauna on Earth. She is a tamer of animals that she uses in combat. She comes to the surface to assist Amaya and the others and afterwards decides to make a brigade who would protect Earth at all times becoming a new teacher at Joshua's college.
Yggdrasil is a long range character who fights with a whip. She can bind people in her whip and pull them closer for combos or rather throw them away. She can make quick slashes with it, floor sweep people and whip in all directions. In some combos she disconnects the halo on her whip which then acts like a boomerang.
Her Doom Attack is Tree of Life. Yggdrasil flies up in the sky and throws her whip into the ground, near the opponent. Out of it sprouts a giant tree which envelops the opponent damaging in the process. If they are KO'd in the Doom Attack the tree disappears and a sucked dry body remains on the floor.
Doom Dome Battle
Yggdrasil appears late in the story, being one of the lasts bosses to be fought. She manages to break through the dome barrier and lands on the ground where she encounters Tyrant and Maria Justice. She makes Maria crash herself which triggers Tyrant to fight her. She however manages to escape when Tyrant flees to the Gates of Hell.
She later appears next to Amaya and the others, checking to see if Amaya is safe and is surprised of what she is capable of nowdays.
Doom Dome Battle 2
Yggdrasil is ugraded to a playable character in Doom Dome Battle 2, being a high school teacher on the school of Joshua, Amaya, Prince, Mai and Violet.
Rokukai's Demon Bounty
Yggdrasil is a major character who appears in Rokukai's Demon Bounty. She first appears in the endings of all three levels of the third stage. She appears to take Rokukai to either Heaven Gardens or Heaven Prison. In the Heaven Prison level she locks Rokukai up but he gets freed by Judas and has the option to fight Yggdrasil, Judas or simply escape. When Yggdrasil gets defeated she alerts Michael of what's happening which may lead to the war btween the Heavens and the Underworld.
In the Heaven Gardens level she requests his help to defeat Stolas on the Three of Life. Rokukai can help her do that or he can find and defeat Judas or even flee. When defeating Judas in the levels she comes and allowes her son Seben to go with Rokukai on adventure. When having all the information about Judas in the Heaven Temple level she sends them on a mission to go to the Moonrose Coven. Otherwise when only defeating Stolas Seben is still allowed to join Rokukai.
She makes a second appearance on the Stage 6 level: Infernal Planes where she also is on the side of Michael's army in the war between the Heavens and the Underworld. When Michael is defeated Yggdrasil comes to pick up her son and has to execute him for killing Michael.
She also appears in the true ending, helping Seben and Rokukai get inside of Aries' lair. She is seen watching them go off into the distance along with other characters.
- She shares the same name as immense mythical tree that connects the nine worlds in Norse cosmology.