The Toymaker's legions
After the Fourteenth and Fifteenth Doctors bested the Toymaker in a game of catch atop the London UNIT HQ in late 2023, the Toymaker ominously told them that his legions were coming after the Fourteenth Doctor banished him from existence as his prize. (TV: The Giggle [+]Loading...{"timestamp":"00:48:21","1":"The Giggle (TV story)"})
Early on in his life, the Fifteenth Doctor was aware he'd be facing a "whole pantheon of new enemies", but confidently believing they'd have "no idea what they['d] let themselves in for." (PROSE: "Heroes of Time" [+]Part of Whotopia: The Ultimate Guide to the Whoniverse, Loading...{"namedpart":"Heroes of Time","1":"Whotopia: The Ultimate Guide to the Whoniverse (reference book)"})
The Goblins were part of the Toymaker's legions. The Fifteenth Doctor realised this when explaining he was out of his depth with the Goblins' own form of physics to Ruby Sunday on Christmas Eve 2023. (PROSE: The Church on Ruby Road [+]Loading...{"page":"100","chaptnum":"Thirteen","1":"The Church on Ruby Road (novelisation)"})