At a young age was traded by his parents to Heatran in exchange for a Heatran forged Sword, whether they were going to come back for him or not after the battle is anybody's guess but even with a sword made by the Legendary of the Forge they still fell in battle and the Sword was lost.

He was raised by Heatran till he was 18 spending his developing years working as his blacksmith's assistant given the name Crane Forgeron. He has the skills to be a truly Master Blacksmith and Craftsman but he doesn't enjoy doing it very much because it reminds him how he was abandoned and traded for a sword. Once he was able to forge his own path in the world he left Heatran with respect for his master and guardian but had no intention of sticking around, he wanted to see the rest of the world for himself and experience a lot of life's pleasures that he missed out on given his job's requirement for discipline. He had enough money to be comfortable for a while or be financially stable if he used it wisely, but he ended up wasting most of it within the first month being away with stuff like drinking and gambling. The one line he didn't want to cross was having unprotected sex. He likes physical pleasure and thinks himself a charmer to the ladies, but he had a shitty childhood because his parents weren't there for him and Heatran wasn't much of the nurturing type, so he doesn't want to ruin his own kids' life by not knowing them and not being there.

He spent a few years wandering around from place to place, got into music as well as mysticism, took up playing the Drums and learned about how the drums could be used to send secret messages, so he started playing on the street making a little money but also broadcasting beats with just his thoughts for somebody else to hear and pick up on, then eventually he got a response and was invited to join a Voodoo Temple. The Temple's members had been using drums for years to send secret information between members to establish meeting because their practices had been frowned upon and demonized in society as Giratina worship and Witchcraft, and then all of a sudden a stranger comes to town playing his own drums in a way that matches their codes but doesn't align with the information they were trying to convey. It confused them for a while before they figured out who was accidentally messing with their signal and that this guy wasn't doing it intentionally, he just wanted to be part of something. Crane felt welcomed by the group and began to model himself after one spirit in particular; Baron Samedi


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Allow me to provide a little bit of context:
In Real Voodoo there is one supreme god who created the universe but this god is indifferent to what goes on in the world, instead the world is run and watched over by spirits called the Loa which can be prayed to and appeased through specific offerings, rituals, and musical performances. There are at least 232 Loa recorded but potentially more and all of them have their own unique identities; different likes, dislikes, and powers which people invoke them for in exchange for guidance and services, and will sometimes interact with people by possessing a body and taking control. Some of these Loa are spirits that exist within nature, others were formerly notable mortal people like leaders of families or tribes, great warriors, hunters, etc...
Baron Samedi is the head Loa of the Gede Family the guardians of the past, of history, and of heritage and represent the Powers of Death and Fertility. He is essentially the Loa equivalent of a Grim Reaper. Nobody dies until the Baron buries them and then meets then on the other side. You could be saved from dying by convincing Baron Samedi that it is not your or your loved one's time to die yet and he is especially merciful to children wanting to see everybody live out a full and fulfilling life of happiness before they die, meaning because he controls who dies, he also has the most powerful healing powers curing any wound, disease, or cast hexes on anybody he deems deserves to die.
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Pokemon does not nessisarily have Loa as Creator Spirits who are part of Nature since they have the Legendaries and the Legendaries are treated more as straight up Gods in a vast Pantheon, but there are multiple mentions around Ghost Type Pokemon that there is a Spirit world, so perhaps this version of Voodoo follows more of the aspect of people who have passed on are able to become powerful spirits who have specific jobs interacting with the Mortal world and can be evoked and appeased by Voodoo practitioners to do certain tasks if compensated correctly.

Maybe this world's version of Baron Samedi is one of many Reaper spirits whose job is to help other pokemon transition from life to death, but unlike classic depictions of a Grim Reaper, Baron Samedi is not nearly as "Grim". Quite the opposite actually, he is known for being a lot fun and the life of the party. He usually appears as a tall man with a face painted like a skeleton or just an animated skeleton himself dressed to the nines in a tall shiny black top hat, dark sunglasses, smoking expensive cigars, wearing a black tailcoat jacket, carrying an elaborate cane, downing bottles of rum, and dancing, shouting obscenities and having sex etc...And in one variation of the good Baron he also rides around in a carriage pulled by a horse who is also dressed like him (Top hat, tailcoat, sunglasses, smoking expensive cigars, so on...) He encouraging people to embrace humor and absurdity in life and in death.

The basic message of Baron Samedi that "Life is meant to be enjoyed" resonated with Crane. He took on the name new name of Crane de Samedi to further connect himself with the Spirit of the Party Baron. He worked with the voodoo Temple moving up to become a voodoo priest of Baron Samedi allowing the spirit to ride him and act through him in the world, but some of the other worshippers started to believe he was actually a mortal incarnation of the Baron himself and became one of the head priests of their sect. On the side the temple helped him go to college earn his doctorate studying Music & Performative Arts, Religious Studies, and Archeology, he was given a role as a professor in the college being known as the fun professor who likes to party and effectively balancing a life of Discipline and Hedonism.

Then one night while he was partying he met a Salazzle named Bellinora Eleaika who used him as a one night stand and ditched, this wasn't the first time he had a passing encounter but he would find out later through the spirits that she had used her pheromones to make him get her pregnant, and was using her male children as slaves. He could not stand for this and left his comfortable life to try to be a father to his children. 19 years later he would eventually find his eldest daughter Kaida La Croix and involve himself in her life...perhaps a little late but better than never.