SD Gundam Seidan (SDガンダム聖伝) is a Cardass series in the Knight Gundam series released in 1997.
In the world of Llion Cardzi, a young Gundam named X goes on a journey in order to fulfill his dream of becoming a knight. To do this, he must first master the swordsman, warrior, and mage classes. In his journey, he faces off against the Demon King Army.
Since it takes place in the alternate world of Llion Cardzi and not Saddrac World, this story can be considered a spin-off of sorts for the Knight Gundam series. Its characters are based off of After War Gundam X and Mobile Suit Gundam: The 08th MS Team.
It was cancelled after 2 chapters due to stagnant sales, but received completion in the form of both its Manga adaptation and SD Gundam Ultimate Battle.
Tropes associated with SD Gundam Seidan are:
- Eldritch Abomination: One thing that can be said about Great Demon King Zaidaria is that not only is it neither Gundam nor human, it's doubtful that it naturally belongs in Llion Cardzi.
- Job System: The classes are kinda like this. To wit, X starts off as a Fencer, then goes to Swordsman to Warrior to Mage and finally to Knight.
- Oddball in the Series: Before Llion Cardzi was fused with Lacroa into Saddrac following Ultimate Battle, Seiden is the only SD Gundam Gaiden work to not take place in Lacroa.
