Beside being the God of the Dead Hades (Camp Half-Blood Chronicles) he is the God of Wealth, Hades can sense and summon any quantity of precious metals and jewels from under the ground, as well as manipulate them. As a result, Hades is the richest Olympian of all. even Persephone admits to never having seen "such dazzling wealth" even on Mount Olympus itself
Being the Daughter of Hades/Pluto Hazel Lévesque (Camp Half-Blood Chronicles) sense and summon any quantity of precious metals and jewels from under the ground, as well as manipulate them.
Thanks to the blessings from the fairies at her christening, Briar Rose (Fables) was blessed with perpetual wealth. As such she can easily become rich very quickly and easily. It has been speculated that even if she were to give all her money away she would win the lottery the next day.
Nibelung's cursed treasure promised Siegfried (Fate/Apocrypha) a life untroubled by money, but he has bad luck.
Yukariko Sanzenin (Hayate no Gotoku) is the only character to have attained The Royal Power, granting her unimaginable luck and enough wealth to last an entire lifetime or more.
Millionarie (Valkyrie Crusade)
Rich Girl (Valkyrie Crusade) is so wealthly blessed that even though she literally tosses money to everyone she passes, she only becomes even richer.