There is no place for virus, virions, prions in kungdom classification. The reason is they show both living and non living characters, which don't define them whether they are living beings or non living things.
As in 5 kingdoms, the only living organisms are classified.
Kingdom Monera mostly deals with the organism which contains prokaryotic cells.
Kingdom Protista deals with the organism which have eukaryotic cells.
Kingdom Fungi deals with various fungal organism.
Kingdom Plantae deals with various type of plants.
Kingdom Animalia deals with various type of animals.
So, you can see that there is non of the kingdoms which deals with the organism which have similar characteristics like viruses, virions and prions.
