| 1 | A | B | C | D |
| --- | --- | --- | --- | --- |
| 2 | Ontronik Khachaturian - Bands |  |  |  |
| 3 | Band | Position | Start date | End date |
| 4 | System of a Down | Co-founder/Drums | 1993 | 1997 |
| 5 | The Apex Theory | Founder/Vocalist | 1999 | November 2002 |

Question: What did Ontronik Khachaturian do after leaving System of a Down?
Answer: After leaving System of a Down, Ontronik Khachaturian founded The Apex Theory in 1999.