LEGO MOC Portal Companion Cube by Mahj

LEGO MOC MOC-0259 Portal Companion Cube - building instructions and parts list

MOC] Portal companion cube - LEGO Technic, Mindstorms, Model Team

MOC-15826 Power Up Mushrooms and Question Box Portal Companion

LEGO IDEAS - Companion Cube-Portal

Companion Cube, LEGO Dimensions Wiki

Lego Portal Gun, Chell Figure and Companion Cube : 4 Steps

LEGO IDEAS - Thinking with Portals!

LEGO MOC Portal - The Weighted Companion Cube by BrickPudding

LEGO MOC Portal - The Weighted Companion Cube by BrickPudding

Lego Portal Gun, Chell Figure and Companion Cube : 4 Steps

LEGO MOC Companion Cube - Valentine's Day by BrickDesignerNL

LEGO MOC 5x5x5 Compact Companion Cube by Thomus_Bean

Companion Cube, LEGO Dimensions Wiki

MOC] Portal companion cube - LEGO Technic, Mindstorms, Model Team

LEGO MOC Expanding cube by jemunoz0

LEGO Dimensions Chell's Companion Cube Portal 2 71203