So yeah, this is basically what it looks like... Sgt. Frog if the 'invasion' took place in Soviet Russia rather than modern day Japan. This was a LOT of fun to make as I absolutely adore the Sgt. Frog manga! Thought Giroro's eternal frustration with Keroro and his silly ways made a great opposing forces/vs. theme for the poster... plus the visual symmetry fits in well with the Soviet propaganda style.
In regards to the actual make... Keroro and Giroro's heads I actually did from scratch as couldn't find any decent side-on pictures with a high enough resolution. All done in Photoshop CS4 btw. The images at the top were originally photos of the Keroro Gunso robo model sets that Bandai make... have a few of them on my shelf, seriously go buy them now they are awesome! The faces along the bottom are altered from a set of badges this lovely person made...
...and a wallpaper off fanpop: [link]
Also thanks to
for their incredibly handy stock textures/backgrounds
...and this helpful guy for brushes