The ''My Little Pony'' multiverse is, in some way, connected to the [[Transformers]]/[[Hasbro]] multiverse, as confirmed thanks to the existence of [[Primax 613.28 Lambda]] and [[Tyran]]. According to [[Vector Prime]], however, ''My Little Pony'' is mostly fictional in his multiverse.
Although never officially confirmed, it's been implied on a small handful of times that the ''My Little Pony'' multiverse may be in some way related to the ''Transformers'' multiverse. ''My Little Pony'' has, at numerous points, been confirmed to be a brand of toys within ''Transformers'' and other related properties (notably ''Jem''), similarly to how Optimus Prime has appeared through ''My Little Pony'' as a toy or pop-culture figure. In addition, during ''[[G.I. Joe vs Transformers]]'', [[Megatron]] traveled to the world of [[Unicorn (planet)|Unicorn]], a planet resembling [[Equestria]] to the point where [[Twilight Sparkle]] appeared on the planet. Other pieces of evidence that may suggest they're connected somehow is the inclusion of [[Discord]] in two ''Transformers'' media properties, ''Ask Sideways'' and ''AllSpark Almanac'', albeit as brief cameos in both.
Another series ''My Little Pony'' has often been paired with has been ''Dungeons and Dragons''. Given that Hasbro owns the right to D&D, a number of MLP x D&D merchandise has been produced.
