

Immense Strength: Grendel has tremendous strength, as a normal punch from him was described as superior to Sairaorg in his Balance Breaker. Grendel was later revived by Qlippoth at some time before the start of Volume 14 using the Sephiroth Graal. He was later terminated by the original Beowulf, who left nothing remaining after ending his reign of tyranny according to Vritra. In the past, Grendel also fought against Ddraig at some point before he was sealed. Strangely, he can also give way to frustration, and even fear, when faced with an opponent who refuses to stay down, as shown in his fight with Sairaorg. ĭespite his obsession with fighting, he is capable of recognizing that some foes are out of his league, conceding that he could at least not take on Crom Cruach with most of his body destroyed. He shows masochistic joy when he gets injured, and sadistic pleasure when torturing others. He hates having to share opponents with his fellow Evil Dragons, and would even go as far as to disobey orders from his superiors in order to keep fighting. He is a battle maniac who loves physical combat and destroying more than anything, shivering in sheer joy when confronted by a foe that faces him in a head-on brawl instead of resorting to tricks & traps. Grendel is an aggressive, psychotic Dragon that is only interested in fighting and killing. He exudes a dark and ominous aura, filled with hostility and killing intent. Issei has compared him to a Giant with Draconic features, describing him as "possessing a form close to a human, with the wings, head and tail of a dragon." He has blue-colored blood. Grendel is a 15 meter tall Western Dragon with black scales, bright silver eyes, horns, wings, and thick limbs, uniquely being a bipedal Dragon.
