With some great help off  redflare500, he created an image I've had in my mind for a while.

Garrus being technically an ooze in most of his last Pathfinder campaigns, always wanted to do stuff with other oozes as a Slimelord.
While it never came to be, his profession of Wild Rider Druid would have helped to develop the Ooze Rider feat.

The idea was that I'd make my own gelatinous cube or being somebody who could empathise and talk with oozes as fluently as his meaty party companions were able to breathe air, he would become a mounted fighting companion to a 10ftx10ft Gelatinous Cube. Fighting atop it with spells and magics while the ooze absorbed projectiles, weapons and eventually attackers, we'd become a powerful fighting force, merged into one and fighting as one as the doctrine of the Wild Rider supported.

I guess you could say the depicted image is Garrus' and probably the first time in the universe (of which dimensions are counted to be in the past and no longer the future to come) where a Gelatinous Cube has been mounted and especially by a Wild Rider who intends to fight alongside... on top... as a... cube.
It was also Garrus' first time, hence the shock of the cube zooming around in excitement... If you could call it that. That, and my own scare as we seamlessly merge and the lack of balance at first. You don't understand Oozes like us other oozes and Slimelords do :V

This is only a small cube, he'll grow bigger. I will nurture him until he's 10ftx10ft again! (I believe I read somewhere that Oozes tend to shrink as they become unwell and malnourished)