By A Mystery Man Writer
StrikeForce Kitty 2, StrikeForce Kitty Wiki
Companion Cube by NES--still-the-best on DeviantArt
How to Make a Low-Budget Weighted Companion Cube From the Portal Video Game Series
Concentric_Killa's 2.4 Build - Build Diaries - Team FDM
Companion Cube from the Portal video game series
StrikeForce Kitty 2, StrikeForce Kitty Wiki
StrikeForce Kitty 2, StrikeForce Kitty Wiki
XJ-9 and Cube by Don-ko on DeviantArt
How to Make a Low-Budget Weighted Companion Cube From the Portal Video Game Series
Concentric_Killa's 2.4 Build - Build Diaries - Team FDM
Portal (hama) sprites by Butterfly-Brain.deviantart.com on @DeviantArt
Concentric_Killa's 2.4 Build - Build Diaries - Team FDM
Companion Cube by NES--still-the-best on DeviantArt
Mysterious Red-Lighted Object in the Dark