The Killer Robot Instability
| Episode Number | 12 |
|---|---|
| Season | 2 |
| Aired | 2009-01-12 |
| Overview | Penny's criticism of Wolowitz's romantic life pushes him into depression and AWOL for a fighting robot battle the rest of guys are depending on him for. |
| Runtime | 25 minutes |
| Absolute Number | 29 |
| Finale Type |