Diablo

That time i got reincarnated as a slime. Should there be any "grey areas" in his instructions, Diablo has the freedom to carry out his orders how he sees fit. The greatest show of Diablo's loyalty to Rimuru was recruiting hundreds of other daemons, including the last three Primordials, to serve his master; the creation of the Black Numbers, who became the de facto strongest fighting force in Tempest. Diablo also despises owing a debt, even to someone who has already passed on. Shizu's replacement, Tiss attempted a desperate summon to save Shizu's Students from a Phantom, only for the unnamed Diablo to offer his aid for what was practically a pittance of a price by forbidding her from mentioning his involvement, and proceeded to slaughter the aggressor in a truly horrific fashion, thus fulfilling his debt.