Chitrigupta

Chitrigupta is a Hindu god who keeps a record of everything a soul has ever done, good and bad.

Aru Shah and the End of Time
Aru Shah and Mini met Chitrigupta in the Kingdom of Death after entering a location with a sign that said, KARMA & SINS. Miniature versions of himself were helping him write stuff down. He says Yudhistira, Mini's reincarnation, has never been a female before, but he and not even Dharma Raja could help them on their quest to stop the Sleeper. Instead, he gives them good karma (two tokens with mirrors) to get past the Halls of Death, a cookie that smell like books, soma so they won't get thirsty from the dead and a slim ballpoint pen.

Mini eats the cookie of wisdom to solve the riddle of the three arrow signs that say TO DARE, TO DISTURB, and TO DEIGN, and get to the Palace of Illusions. The good karma was given to Past Time and Wish so they would let the girls go. Aru used the pen to find out about the secrets of Arielle Reddy, Poppy Lopez, and Burton Prater to black them so they would leave her alone.

Apearrence
Chitrigupta had a bulbous nose.

Trivia

 * He is closely tied to the principle of karma - as in "what goes around comes around."