Kit Review

Straight build

Size comparison with a cigarette pack

Megalomaria Grin Doll - Various angles (1/6)

Megalomaria Grin Doll - Various angles (2/6)

Megalomaria Grin Doll - Various angles (3/6)

Megalomaria Grin Doll - Various angles (4/6)

Various angles

Megalomaria Grin Doll - Detail shots (1/4)

Megalomaria Grin Doll - Detail shots (2/4)

Detail shots

For weapons, it comes with a spear (short), an axe, and a club.

There are 7 different hands included in total.

Megalomaria Grin Doll - You can also choose between a mouth with teeth and one without, but since they're not easy to swap ou

You can also choose between a mouth with teeth and one without,
but since they're not easy to swap out, you'll probably want to decide which one to go with during assembly.

Accessory parts that were also included with the original Principal body

Leftover parts

The articulation is the same as the original Principal.

Megalomaria Grin Doll - Various poses using the weapons (1/9)

Megalomaria Grin Doll - Various poses using the weapons (2/9)

Megalomaria Grin Doll - Various poses using the weapons (3/9)

Megalomaria Grin Doll - Various poses using the weapons (4/9)

Megalomaria Grin Doll - Various poses using the weapons (5/9)

Megalomaria Grin Doll - Various poses using the weapons (6/9)

Megalomaria Grin Doll - Various poses using the weapons (7/9)

Various poses using the weapons

Together with the Megalomaria Principal.

This kit is the Grin Doll, released as part of Kotobukiya's Megalomaria series. Megalomaria PrincipalIt's a female mecha variation based on the Principal, with a goblin concept character whose standout feature is that wickedly grinning face.

The core body characteristics are the same as the Principal, so it's still a top-tier action figure model kit with outstanding articulation and solid joint strength — though the bizarre concept face and decorations might make it a love-it-or-hate-it kind of look. The "Grin" in Grin Doll isn't the common color "green" but rather "grin," meaning a wide smile. True to its name, the grinning mouth is the defining feature, and you can choose between two options during assembly: one with diagonal tooth markings and one without.

Compared to the original Principal, the head, shoulders, wrists, chest, and feet designs have all been changed. The sharp spikes added to the shoulders in particular give it a noticeably distinct look. Its unique weapons include a spear (short), an axe, and a club, and the standard Principal accessories are also included. Thanks to the new weapons, you can pull off poses that feel quite different from other kits.

All in all, it's another solid variation reusing the Principal body. Since the action capability alone puts it at the top of the class, if the style suits your taste, this seems like a kit that's plenty of fun to play around with. :-)

Megalomaria Grin Doll | 2025.6 | ¥5,800

AIThis page was translated by Claude Sonnet.