| Hint | Name | Actor |
| This neurobiologist girl is Sheldon's girlfriend? | |
| Who bonds with this 'bestie'? | |
| Whose relationship with Leonard is destroyed by this enemy of Sheldon? | |
| Who plays in a card tournament at this man's comic book shop? | |
| Who sings on this physicist's karaoke machine at Sheldon's party? | |
| Who is impressed by the racy hot tub story of this man who dated Penny? | |
| Who bonds with this fellow reader of Archie comics? | |
| | Hint | Name | Actor |
| Who is the brother of this lawyer? | |
| Who dated this experimental physicist? | |
| Who dates this doctor after Howard crashes the Mars rover? | |
| Who is the only person Leonard has dated that this physicist could tolerate? | |
| Who is constantly belittled by this ex-girlfriend of Leonard? | |
| Who had a casual relationship with this friend of Leonard? | |
| Who fell in love with this microbiologist? | |
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