All of my MonsterPocalypse (MonPoc) armies are based on 60mm wide bases (1 MU = 30mm).  It is a scale that fits really well with the figures.  All the armies are based the same scale so they can fight each other.

MonPoc is a Kaiju (giant monster -- like Godzilla) game released in 2008 to 2010.  In its original release it had random packs of prepainted plastic figures, with different rarities.  It was re-released a decade or more later with a more standard model of unpainted metal or resin miniatures.

The base scale is something like 6mm -- the buildings and human vehicles are approximately that scale.  But the giant monsters (and the giant robots that humanity builds to defend itself from them) are the size of buildings.  Buildings were also included in the random packs.

The original MonPoc game is/was a skirmish game -- each model represented a single monster.  I've never played it.  All my MonPoc armies are built to play Fantasy Triumph.

Fantasy Triumph is a game system created to allow players to design their own armies.  What I'm describing here is the "official" MonPoc army lists -- how they are best represented in Fantasy Triumph.  According to me.  If you want to represent them some other way, more power to you.  That's why "official" is in quotes -- there are no official army lists for Fantasy Triumph armies.  With that said, the army lists as described herein are a very good representation of each faction, and support competitive games against each other (within the context of fighting other MonPoc armies).