*Guila is the Vice Great Holy Knight of Liones, the daughter of Holy Knight Dale, and the older sister of Zeal. Her power is Explosion, and she also has access to the power of Demon Clan by her association with the New Generation during the events of Nanatsu no Taizai.

Guila is a young female with a slim build and long black hair. Her eyes are very narrow, giving the impression to be closed at all times. After first being defeated by Meliodas, her hair is cut so her bangs cover her forehead.

Her first attire consisted of a single white one piece with a small white coat, with long white high heel boots. She did not wear any armor other than her gloves and knee protectors. She also wore a pale pink headband on her head.

Guila is a very dedicated knight who is so faithful that she killed herself in order to chase Elizabeth Liones and the Seven Deadly Sins who entered the Capital of the Dead. Thanks to the demon's blood, she was also extremely confident in her abilities and strength, seeing as how she readily fought Diane and Meliodas together at the same time.

In reality, she is truly deeply insecure in herself, according to Gowther; her natural calm, sweet demeanor became disastrous the more impatient she became with herself, as it kept magic from blooming. On her design sheet, it's said weakness and stunted emotional growth led her to be easily used by Helbram. Despite her often cold, deadpan nature, Guila shows a soft side towards those she cares for.

Guila has a strong sense of justice, as shown by her dislike of Helbram for making the Deadly Sins seem villainous when they did nothing. She also has a sarcastic sense of humor, as shown when she teases Veronica.*