When wyatts kidnapped, all his friends are murdered. Heās the only one that āsurvivesā
He canāt be sensed or found because the town heās in is surrounded by the bones/bodies of thousands of witches killed by demons. Itās an act of evil so powerful it causes a blind spot in the world. No one knows the town exists and it, and those in it, canāt be sensed or found by magic.
Wyattās mannerisms are similar to the comic version of The Winter Soldier/Bucky Barnes. Heās working simply for the bad guy, living for them. Heās Lucifersā weapon, nothing else. But that IS his life, heās very loyal to them, he knows nothing else. Itās not something as simple as being controlled or brainwashed (though he has slightly been through the trauma and torture he faced). Itās just who he is now. TakeĀ this videoĀ for inspiration and how he acts when heās not ā working ā. Demons, weirdly enough, are his family. His friends. Heās loyal to them and Lucifer alone.
Eventually his family do find him and remind him of who he is. But being, virtually, raised by Lucifer from the cage (the only person he had to talk to) Wyatt canāt destroy the connection heās formed with him. He doesnāt like it, but heās always seen him as his father as Lucifer, tauntingly, has always treated him like his āsonā. (interactions where heās āgoodā again and trying to redeem himself will only take place through plotting or request. The default will be āweaponā Wyatt).
When Wyatt does come back to his senses he loathes Lucifer. He destroyed his life, everything good about him. Itās just a big old complicated mess. And while he wants him dead, deep down, he doesnāt know if he can do it himself.Ā
Eventually, he doesnāt feel comfortable being with his family anymore. The connection there is broken and heās done so much that he feels undeservingĀ of them, but also, totally wrong acting as thisĀ āwarrior for goodā when heād done so many horrible things. Vanishing one day with nothing but a note telling them not to look for him. Wyatt starts up his own bar/semi-roadhouse in the middle of outback america that acts as a respite for all magical and supernatural creatures. Hunters are welcome so long as they mind their own business and donāt hurt any of his customers. He changes his name, especially his last name, and doesnāt hunt or fight evil anymore. Heās just impartial to it all and totally neutral only providing information if its needed. All he wants is to finally live as his own person without any side pressuring him to be theirs. (this is after either, LuciferĀ being sent to the cage or after heās killed in s14).Ā
In this specific verse, Wyatt IS half angel half witch. THIS HC explains it further but essentially Leo was one of heavens angels that was thought to be killed by Lucifer in the uprising. However, he just used that opportunity to live amongst humansĀ ā changing his name to Leonardo Wyatt and becoming a guardian angel for witches. Eventually, he falls for Piper and Wyatt is born ( along with Chris and Mel ) but he gives up his grace for his family just like in the show, becoming human.