Below you can find information about the people featured in the trailer, listed in order of appearance.
| Peter Singer Co-Founder, Great Ape Project Professor, Princeton University Additional Information |
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| Steven M. Wise, Esq. President, Center for the Expansion of Fundamental Rights, Inc. Additional Information |
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| Gary L. Francione Distinguished Professor of Law Nicholas deB. Katzenbach Scholar of Law and Philosophy Rutgers University School of Law Additional Information |
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| Jarrod Bailey, Ph.D. Science Director, Project R&R - a campaign of the New England Anti-Vivisection Society |
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| Dr. David Priestman Clinical Genetics, Oxford University Additional Information |
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| Katherine Meyer Partner, Meyer Glitzenstein & Crystal |
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| Richard Epstein James Parker Hall Distinguished Service Professor of Law, The University of Chicago Peter and Kirsten Bedford Senior Fellow, The Hoover Institution Visiting Professor, New York University Law School Additional Information |
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| Pat Dingle Zoo Director, Las Vegas Zoo |
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| Laurie Pycroft Founder, Pro-Test |
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Over 20 interviews were conducted for Defining Person. Some of the additional people interviewed but not in the trailer are listed below.
| Roger Fouts, Ph.D. Co-founder and Co-Director, Chimpanzee and Human Communication Institute Professor of Psychology, Central Washington University |
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Gloria Grow Founder and Director, Fauna Foundation |
| Theodora Capaldo, Ed.D. President, Project R&R President, New England Anti-Vivisection Society |
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| Linda Brent President and Director, Chimp Haven |
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| Pedro Pozas Terrados Executive Director, Great Ape Project Spain |
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| Sarah Baeckler, JD Executive Director, Chimpanzee Sanctuary Northwest |
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Special thanks to the following individuals and organizations for their contributions to the trailer:
- Bonobo footage courtesy of Friends of Bonobos
Friends of Bonobos supports Lola ya Bonobo, the world's only bonobo sanctuary who recently sent the first bonobos back to the wild. - Music composed by Noel Gabriel
- Fact checking help from Sarah Baeckler

