The Matchbox Robotech toys may have been a bit cheated for proportions, but they seat other 3 3/4 inch figures nicely, including the world's first one (Microman of course). I see the proportion cheating not unlike the same done to Star Wars vehicles in the original Kenner Star Wars toys...the detailing is great, and the clear canopy looks nice if not strictly canonical. Also from the right angle, it looks like exaggerated perspective.
Zentran & Microne! Yahk deculture!
In the full Flickr photoset you can see the whole mecha, as well as it piloted by a Zentraedi action figure.
Do you own any Matchbox Robotech or ExoSquad toys? Do you use them with your Micronauts or other action figures? What do you think of tweaking the proportions of a design in order to make it action figure compatible? Feel free to leave your thoughts in comments here or on Flickr! :D