That’s because both heavily evoke the Voodo diety Baron Samedi who according to Wikipedia:
“Baron Samedi is usually depicted with a top hat, black tail coat, dark glasses, and cotton plugs in the nostrils, as if to resemble a corpse dressed and prepared for burial in the Haitian style. He is frequently depicted as a skeleton (but sometimes as a black man that merely has his face painted as a skull), and speaks in a nasal voice. The former
President-for-Life of
Haiti,
François Duvalier, known as Papa Doc, modeled his
cult of personality on Baron Samedi; he was often seen speaking in a deep nasal tone and wearing dark glasses.
[2]
He is noted for disruption, obscenity, debauchery, and having a particular fondness for
tobacco and
rum. Additionally, he is the loa of
resurrection, and in the latter capacity he is often called upon for healing by those near or approaching death, as it is only the Baron that can accept an individual into the realm of the dead.
[3][4]
Due to affiliation with François Duvalier, Baron Samedi is linked to secret societies in the Haitian government and includes them in his domain.
[5]
Baron Samedi spends most of his time in the invisible realm of
vodou spirits. He is notorious for his outrageous behavior, swearing continuously and making filthy jokes to the other spirits. He is married to another powerful spirit known as
Maman Brigitte, but often chases after mortal women. He loves smoking and drinking and is rarely seen without a cigar in his mouth or a glass of rum in his bony fingers. Baron Samedi can usually be found at the crossroads between the worlds of death and the living. When someone dies, he digs their grave and greets their soul after they have been buried, leading them to the underworld”
So it’s not surprising they look alike.