Popularity: 1
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| Writer Dan Harmon has his assistant Spencer Crittenden construct a time machine to transport historical figures from the past so he can interview them. The interviewees only survive for a few hours before undergoing a "total protoplasmic disconversion" and collapsing into dust, which Spencer collects in a jar. |
| Name | Character | Episodes |
|---|---|---|
| Spencer Crittenden | Spencer | 15 |
| Dan Harmon | Dan Harmon | 15 |
| Aubrey Plaza | Mary Wollstonecraft | 1 |
| Jack Black | Ludwig van Beethoven | 1 |
| Jason Sudeikis | Thomas Edison | 1 |
| Kristen Schaal | Amelia Earhart | 1 |
| Nick Kroll | Sigmund Freud | 1 |
| Matt Walsh | Harry S. Truman | 1 |
| Gillian Jacobs | Ada Lovelace | 1 |
| Thomas Middleditch | William Shakespeare | 1 |
| Danny Pudi | Buddha | 1 |
| Dana Carvey | John F. Kennedy | 1 |
| Scott Adsit | Ernest Hemingway | 1 |
| Andy Dick | John Wilkes Booth | 1 |
| Paul F. Tompkins | Edgar Allan Poe | 1 |
| Sarah Silverman | Betsy Ross | 1 |
| Ron Funches | Idi Amin | 1 |