It's been brought up before, but it is definitely worth bringing up again. Lucas does not consider his step mom. If King Roy dies and his wife is surviving, almost certainly any real property would go to her. As would most, if not all King Roy's financial assets. If Lucas's step mom wanted to sell the Elk Kingdom and move out of the area, she could. Lucas could do nothing but mooo and reee about it. I am thinking this is the most likely scenario.
If King Roy did die before Lucas, he would post a video immediately talking about what he would get out of it and how plenty good it was. He would definitely be telling the baby zooms to form a queue and line up to date the rich ragman, Lucas Werner. He would be jumping up and down saying "give me the Elk Kingdom and his money, it's mine! Give it to me right now, right now, right now, right now!" The fat faggot has zero idea how estate processes work. No idea whatsoever. Like I said, Roy could leave everything to his wife and then she could tell Lucas and his brothers to get lost after that. There would probably be no legal recourse they could take if she did. As for Myrna, I bet her and her husband are not really wealthy at all. And they know better than to give their bovine son any money. Just leave him a Panda Express gift card. And Lucas would lose his precious tugboat if he received money that was not in an ABLE account.
I am thinking Lucas will get nothing, or $5. The moooing and screeching if this happened would make for excellent content. This would be the thing that would push the cow over the edge. Reeee, reee he would say! But there is a very real possibility that Lucas will die before his parents do. He will be buried in a pauper's grave, and all Myrna will do is post on Facebook what a victim Lucas was and how hard of a life he had, that was not her fault or his fault. If her friends post comments like "Oh, Myrna, I am so sorry, when is the funeral?" She will delete those comments and probably block those people, just like her dead son would have.