Derek Hale+siblings+*children+*self Set Toggle navigation activity Toggle Dropdown history discuss follow editors rules Toggle Dropdown common by group by name recent edit Toggle Dropdown content name type refresh children mates references out references in Derek Hale+siblings+*children+*self+*children Cards formed by "mating" Derek Hale+siblings+*children+*self with another card. eg: "Derek Hale+siblings+*children+*self+mate".