L.A.’s Azizi Gibson is as eccentric as ever on Memoirs of the Reaper, balancing his braggadocious swagger with samples snagged straight out of a horror movie and verses that indulge his giddy, childlike instincts. On “Nintendo King,” he turns Mario Party into a game of strip poker over rolling bass squelches, before skating on the minimalist, ticktocking beat of “High,” launching truth bombs at his enemies in his smooth yet gravelly mumble.