Regulus is 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 (
獅子光耀, Raion Buririansu lit. Lion Shining Ray): This move lets out a large amount of light covering a wide radius. This move can be used to blind people for a certain amount of time.
- Regulus Impact (
獅子王の輝き, Regurusu Inpakuto lit. Lion King's Radiance): This move involves the user doing a very powerful punch, with a huge face of a lion that's made out of light, which appears when the punch has made contact. This is Loke's most powerful move (or at least most powerful one currently known) shown being able to knock out Bixlow in one hit. Loke is then seen using his power to write on the air "I Love Lucy".
- Regulus Gatling Impact: Similar to Regulus Punch, the user repeatedly punches at their opponent(s) with their fist covered in a large mass of light, taking on the shape of a vertical elongated oval, to enlarge the striking area, sending them flying from the impact whilst releasing brilliant beams of light.
- 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.