Sure! Here are some possible character backgrounds for the scene:
- Jerry Seinfeld: The main character and host of the group. A successful stand-up comedian who lives in a comfortable apartment in New York City.
- George Costanza: Jerry's best friend and sidekick. A neurotic and pessimistic character who often gets himself into embarrassing situations.
- Kramer: Jerry's eccentric neighbor who often bursts into his apartment unannounced. He's known for his wild ideas and schemes.

For this particular scene, their personalities might be:
- Jerry is the most level-headed and curious about the new vegan restaurant.
- George is more skeptical and resistant to change.
- Kramer is the most enthusiastic about trying the new restaurant and introducing his friends to seitan.
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