Regulus is a Caster Magic and a variation of Light Magic.
Regulus is a type of magic which allows its users to produce the element of light from their body. Regulus has mainly been seen used to boost the users' melee performance, empowering their physical attacks with wakes of destructive light, which are produced from their unarmed blows in a fashion similar to a lion clawing at its prey. Light can also be employed in other ways, with the user being capable of emitting it in vast amounts, enough to cover a wide area, and of shaping it into various forms. To activate such power, Loke was initially shown bending his right arm, with the clenched fist pointed towards the sky, and grabbing his bicep with his left hand, before chanting out "O Regulus... Grant me your strength!". Later on, he is only shown taking on the stance without actually chanting the incantation.
- Lion Brilliance: A Magic spell in which the user calls on Regulus to give them power and releases a large amount of light covering a wide radius, which is used to blind people for a certain amount of time. It can also be used as an attack, as it was shown to destroy Caprico's summoned Knights.
- Regulus Impact: The user raises their hand, engulfed in light, and attacks the target by sending the head of a lion, composed of the aforementioned light, at them.
- Regulus Gatling Impact: The user repeatedly punches their intended target while engulfing them in a brilliant light, sending the targets flying away.
- Regulus (α Leo, α Leonis, Alpha Leonis) is the brightest star in the constellation Leo and one of the brightest stars in the night sky.