Dark Dragon Reise

Dark Dragon Reise is a powerful ancient dragon and protector of the sword of the Demon Lord. Reise has the rare ability to transform into a human, which they use against the other humans to sow discord and steal military intelligence.

Monster file
A dark dragon who protects the Sword of the Demon Lord. One of the eldest and strongest of the already powerful dragons. Even without transforming, this dragon already has a humanoid form. As a result, they take unusual battle tactics compared with most dragons, using martial arts and magic. Since Reise was essentially sealed away with the Sword of the Demon Lord in a separate dimension, their level and stats are slightly lower than those of the other ancient dragons. However, they have several skills that would be effective even on gods; thus their total battle capability is no less than the others'. A legendary-class monster, assumed untouchable by humans.

Appearance
Reise is the most humanoid of all the Dragons, as even without Humanification they are bipedal. Their scales are a dark black, which colour transfers into their more human form. The clothes they wear are a fancy suit and pants along with a hat and gloves, as seen in their monster file.

Personality
Like all Dragons they are very loyal to Güliedistodiez. They're somewhat playful, referring to Ariel as Nee-san in a playful manner. Though they are also very serious in times of need as seen in Final Battle.

Trivia

 * Riese has revealed that they are one of the many genetic experiments created by Potimas Harrifenas during their, Güliedistodiez, Shiraori and Ariel's meeting to discuss the state of the world and the solution to fix it.
 * Due to Potimas' using his genetics for his experiments, they could technically be considered Ariel's sibling. Causing them to fondly call her "Nee-san" as they consider her as their older sister.
 * Riese trained to learn Abyss magic as an Anti-God countermeasure, though they themself admit if Güliedistodiez were to fall to an invader (God), they would not stand a chance.