Hirudo

Hirudo(ヒルド Hirudo) the gate of The Disgraced Leech (恥ヒル Haji Hiru) is a Red Key Celestial Spirit owned by dark mage Lola Hammersmark.

History
At some point in history, Hirudo was banished form the by the. This resulted in his silver key turning red and Hirudo remains to this day unable to return to his home dimension, but rather resides in a different one described as a wasteland - alongside the other Red Key Spirits. The reason for his exile is due to a failed attempt to absorb the Spirit King and obtain his power.

Magic and Abilities
Absorption Magic (吸収魔法 Kyūshū Mahō): Hirudo possesses the gruesome ability of Absorption Magic, where he is able to literally ingest another being whole and absorb their magic and abilities. Extensive use of this magic has resulted in Hirudo's current grotesque form. He also possesses the ability to almost regurgitate monstrous forms from the surface of his body, these are apparently the warped appearances of those who he has absorbed. He is able to freely use any of the magic he has consumed in the past, allowing him to act as a versatile opponent in battle. He has also revealed that the taboo of his magic is absorbing his master Lola, in order to achieve a 'form of ultimate power'. However, the two were incompatible to maintain a binary existence and resulted in Lola's forced expulsion.
 * Kirrellin (キレリン Kirerin): Kerrellin appears as a monstrous and oversized hand which has an eye embedded in the palm. He is able to enlarge his body.
 *  (巨人, ジヤイアント, Jiyaianto):
 * Aren (アーレン Āren): A muscular giant who is able to create fire streams from his mouth. He also has a long, clubbed tail.
 * Fire Magic (火の魔法 Hi no Mahō):
 * Gwythyr (グウィーザ Guīza): A gargantuan creature with bulbous features, long hair and long thorn like ornaments flowing around his white, robed body. He can manipulate earth.
 * Earth Magic (土魔法 Tsuchi Mahō):
 * Unknown: An unknown individual absorbed by Hirudo possesses the ability to use Clone Magic.
 *  (分身魔法 Bunshin Mahō):

Unique Physiology:

Immortality: As a celestial spirit Hirudo cannot die, unless he is forced to remain in the Human World for elongated periods of time. However, as a Red Key Spirit he has the capability to remain in the human world for long periods of time without returning to his own dimension.

Trivia

 * His constellation is based on former constellation;, the harvest keeper, this is the reason for her being a red key Celestial Spirit.