Credit goes to MathewMii, Weapon courtesy of my TIny Bro (LittleBigKahuna38489)

Yuri Knightwong in his regular attire and wielding his signature weapons which he forged in Paradise before heading to the mortal world.
Yuri is the Son of am Aggron father, who was a personal Blacksmith to Arceus in Paradise, and the son of a Pamp Demon Rhydon mother, who trained Yuri in everything from tutoring and combat skills.

Yuri's father trained him to forge weapons and even taught him how to forge with Divine Steel, Sacred Metal, and Sacred Bark. Yuri picked it up fast after he made a small dagger.
Yuris mother was a Pamp Demon sk she was well informed of all types of languages, even the forbidden and taboo languages, she even trained him armed combat, making him a very powerful fighter.

After the angelic demon war, Yuris father stepped down as Arceus' blacksmith to join his wife in the underworld, but before he was sent to the underworld, he recommended Yuri to take a his spot as Arceus' blacksmith, Arceus acknowledged that as he turned in his halo.
When Yuri made it to Paradise, he was joined as Arceus' personal blacksmith, where he enjoyed the lifestyle, even being given his father's old halo.

After a couple of centuries, Yuri began to lose interest mainly because of the way the angelic army treated his weapons without care and compassion. After abandoning Arceus and Paradise to become a mortal. His parents made a deal with the underworld, she'd become the new Pamp Devil for level 6 of the underworld and her husband would join her in exchange for helping Yiri during his fall. Thanks to the deal, Yuri had a semi safe landing, kept his father’s halo and even retained his memories, though now he’s not allowed into Paradise, which he doesn’t mind since his talent was being wasted.

Decades later he assisted Kikyo into defeating Dark Matter and adopted a lone Yveltal and made a vow others wouldn’t see Yveltal’s as death pokemon, which he eventually succeeded when saw fan clubs pop up and Crescent even being idolized by certain pokemon, albeit a bad influence, but didn’t mind that. For that success, he started to wear Yveltal themed diapers, he’d wear TF diapers, but he has no way of turning them into diapers other than flattening them with his hammer and kneading them. He’s also responsible for making new weapons for a new generation of knights since Mona 4 decided to revive Arthur’s old Elemental Knight system at the academy he helped rebuild as he does know some carpentry.

He doesn’t have much memory of his parents, but from the bowls of the underworld, his father happy he’s aiding mortals and his mother proud he abandoned Arceus. Yuri always makes his weapons with his hammer as it’s of divinity so it makes the weapons stronger and doesn’t make them rust or age, they're even strong enough to shatter Arceus’ plates as a security feature in case they were ever misused. Unlike other Siwa residents, he doesn’t wear a robe since they get in the way and he works with alot heat and metal as his forge is usually always scorching hot.

Yuri keeps the halo with him so he can have his divine form back if anyone ever buys his voucher and the halos only allow one Pamp God recommendation which he used for Arthur Quicksilver, the Grandfather of the Quicksilver siblings. He’s willing to let others view and watch him work as long as they don’t disturb him or he will flatten you. He treats his weapons like his kids and detests if they are misused or loved as he will take the weapon away from them, deeming them unworthy of it.

Unlike most other Rhyperiors, he’s not weakened by water, ice or other known weaknesses as his mother trained him in resistance training much like what the kanto trio did with Mercury and Venus. He refuses to make weapons for criminals and outlaws, so he won’t make any for Kroko, Andrea or those related to him as he detests them and feels like they’d use his weapons for evil. As after Kroko lost, he and Lucky worked to destroy Kroko’s sword so Aya’s spirit can finally ascend to the afterlife. Any of the dark gators old weapons he likely destroyed and reforged to sell to someone else.

Despite not knowing what his parents were, Atem sometimes ventures to the Underworld and shows his parents what he’s been doing, he does the same thing with Maria and Marie Quicksilver in the Angelic city. No matter what Yuri does, his mother will alway be proud he left paradise as with all underworld residents, they find the pamp gods nauseating.
Yuri is always happy to see Crescent either with his family or hanging out with Mercury or Venus since Arthur gave him the idea that they could be friends, but he does always beat them in a ramen eating contest since he always orders bottomless big bowls whereas Crescent and Mercury barely make it through half of one bowl. He is often filled with joy at how well maintained Mercury and Crescent are with the spear and lance as he trained them to unleash their true potential.

He resides in Siwa at his forge as a blacksmith where he makes and repairs weapons for a new generation of knights as no one wants to see Siwa fall again, Yuri does often wonder whatever happened to his apprentice Jamey, but hopes he is safe and someday comes back.

End

Wanted to dive a little more into Yuri’s heritage as he’s the son of a pamp god and and pamp demon, but after he abandoned Paradise and got a new mortal body, he no longer has pamp demon blood and only portions of his old pamp god powers, he lacks the means to tf others into diapers as he doesn’t have pamp breathe or fang, but is happy flattening others with either his hammer or his diaper butt. Yuri’s father proud that he followed in his footsteps as he believes teaching Yuri smithy wasn’t a waste, despite being a pamp demon, Yuri’s father will always believe in what Yuri does whereas his mother as the new ruler of Underworld Level 6 will always be happy he’s not with Arceus anymore as with all pamp demons, she hates the pamp gods of paradise, but she has a circle to rule over. Yuri does often wonder whatever happened to his parents as Arceus never told him their in the underworld.

Yuri will always make sure his father’s talents will never go to waste as like his father, Yuri has pride in making weapons to help and aid others.

Yuri Knightwing belongs to me
Rhyperior belongs to Game Freak
Weapon designed by my Tiny Bro (LittleBigKahuna38489)