From GamingWiki
Define a relationship between two entities. This uses two properties: Property: has relationship, which is set like a normal property, and Property: is relationship of, which is set through Semantic Internal Objects.
To use this template, do:
{{Relationship | has specific relationship with | Other Entity }}
The "has specific relationship with" can be any appropriate string, so long as a description of the relationship is formed by prepending the current page name and appending the Other Entity parameter (which should be a page name). For example:
{{Relationship | is the stalwart companion of | Hiro Protagonist }}