Rex mei mundi.
"Dead king" in English translates to "mortuus rex rgis" in Latin.
Rex Iudaeorum
You say 'Tuus rex est.'
rex regum
Filia regis is daughter of a king
There is no Latin word for princess. The nearest is regis filia which is the daughter of the king.
mundus
De hoc mundo: Out of This world
Insanis
Rex bestiarum (I think)
there is no latin king
Tene mundum.