Never Threaten to Stab You

It'll just do it without warning!
My third Companion Cube, this one as a commission for . This one has a little removable knife, just because I was feeling silly.

SEE MY OTHER PORTAL PLUSH PROTOTYPES, MOST FOR SALE!
Wheatley: [link]
Weighted Companion Cube: [link]
The Cake: [link]
Turret: [link]
Fact Core: [link]
GLaDOS Pillow: [link]
Rick:
[link]