Kotobukiya's "Highend Master Model" (officially abbreviated as HMM) series was a model line consisted of Zoids and later, the closely related Tomy series the Z-Knights. It was a joint effort between Kotobukiya and Takara-Tomy. It features highly detailed, pose-able injection-model kits.
There was no unique backstory for the line; information recycled from previous medias about the series' Zoids were included in the instruction manuals.
Kotobukiya officially concluded Chapter One of the HMM line with its Gojulas model in December of 2013.