Black Whale Allègre (暗黒鯨のアレグレ Burakku Hoēru no Aregure?) is a member of the Nero organization and enemy of Athena's Sanctuary, who secretly conspires to kill Cancer Manigoldo and Pisces Albafica, to steal their Gold Cloths.
He appears in a meeting of the Nero organization, discussing the fact that the Sanctuary would soon send some Saints to stop their criminal activities. Don Avido ordered his Black Saints to kill the Sanctuary's Saints and steal their Gold Cloths.
A priest corrupted by the delights of the flesh, he believes that people get closer to God when they follow their instinctive wishes. When Cancer Manigoldo and Pisces Albafica arrive to a church following the Black Saints' evil cosmo, they found a group of dead priests and nuns, and a drunken priest who welcomed them. No longer hiding his true identity to Manigoldo and Albafica, the priest reveals himself as Black Whale Alegre, a Black Saint able to sense Manigoldo's mastery of the Praesepe arts.
An enraged Manigoldo attacks Alegre with his "Sekishiki" attack, but he uses his technique "Holy Spout" to purify and release Manigoldo's spirits, therefore rendering him immune to Praesepe attacks. He later used his powerful "Will Baristu" attack to smash Manigoldo into the floor.
Then he faced Albafica, and tried to kill Gioca. However, the Pisces Saint told him that Manigoldo is still alive. The Cancer Saint reappears and, knowing that Praespe attacks are useless, uses his physical attack "Acubens" to break Alegre's back, killing him.
Cetus (the whale or sea monster) is a constellation in the southern hemisphere in a region known as Water, near other constellations like Aquarius, Pisces and Eridanus.La notable star in the constellation is Mira (ο Ceti), the first variable star discovered. Throughout the period of 331.65 days reaches a maximum magnitude of 2.0-at that time being the brightest in the constellation, then fell to magnitude 10.1. In this constellation there are several stars near the solar system of interest. τ Ceti is, after α Centauri A, the second yellow dwarf next to the Sun's closest star system Luyten 726-8 is composed of two flashing red dwarfs, one of them, known as UV Ceti, is one of the most famous glittering stars , to be known this kind of eruptive variables as UV Ceti variables. The ecliptic passes very near the limit of Cetus, so planets and asteroids can be found in this constellation for brief periods. The asteroid 4 Vesta was discovered in Cetus in 1807.