Some people honor Him by killing other people. Luckily, Naraka has a strong enough police system that most of these people are in prison these days. (You shouldn't kill a Pétísoan; they'd like that too much.)
But if you want to talk to someone about your status in the afterlife and your reincarnation, you might want to pray to Pétíso. Just don't kill anybody. He really doesn't like that.
parents: Korutuzho, Rana, Rékaré?
siblings: Nuvíní, Sozho, Voro, Vasataté. Hérazha?
wife: Vuzhí
consort: Nuvíní
child: Huro
friends: Nuvíní, Píríuso, Sívorí, Zhíanoso
fight: Sozho, Kérasa
allies: Zhíanoso, Vítí, Huro, Névazhíno, Rívorí, Sívorí
adversaries: Hívuítoví, Zhaké, Sorosotuzho, Rana, Korutuzho, Rézhíní