So... I researched TommInnit’s “Minecraft’s Dragon Morph Mod Is Very Funny” and “Minecraft’s Surgery Mod is actually funny”
And I... well I came up with this
If you haven’t watched them, basically Wilbur Soot was Keith the dragon in the dragon morph mod, and had claimed to be Dr. Malpractice in the surgery mod. At the end of the surgery mod Malpractice had taken the organs from the ender dragon, and had called himself Keith.
And if you know me (which you most likely don’t) you’d know that I love to connect dots, and make my own head canons.