| M. | Amsel | A professor. |
| Julie | Andrews | An English actress, singer and author. |
| Giacomo | Balla | Italian painter, art teacher and poet. |
| Umberto | Boccioni | An influential Italian painter and sculptor. |
| Constantin | Brâncuși | A Romanian sculptor, painter and photographer. |
| Mariah | Carey | American singer-songwriter. |
| Steven | Charleston | A retired American Episcopal bishop and academic. |
| Frédéric | Chopin | Polish composer. |
| M. | David | The grade dean at Catherine House. |
| M. | Day | The dean of student life at Catherine House. |
| M. | Donna | A professor. |
| Duran | Duran | An English new wave band. |
| Sigmund | Freud | Austrian neurologist. |
| Howard | Gardner | American psychologist. |
| Mr. | Gonzalez | A chemistry teacher. |
| Lewis | Hine | American sociologist. |
| Diego | Jimenez | One of the students at Catherine House. |
| David R. | Kinsley | A professor of Religion at McMaster University. |
| M. | Lee | A professor. |
| M. | Linus | A professor. |
| Franz | Liszt | Hungarian composer. |
| M. | Luther | Diego's advisor. |
| Agnes | Martin | Fine art artist. |
| Anna | Montgomery | One of the students at Catherine House. |
| Ines | Murillo | A protagonist. |
| M. | Neptune | The director of the new materials concentration. |
| M. | Olsen | A professor. |
| Yaya | Osmond | One of the students at Catherine House. |
| M. | Owens | A professor. |
| Barbara | Pearce | Ines' roommate. |
| Alexander | Rodchenko | Russian artist. |
| M. | Rogers | A professor in Russian and Italian futurism clas. |
| Claudia | Schiffer | German model. |
| William | Shakespeare | An English playwright, poet, and actor. |
| M. | Shiner | A researcher. |
| Frederick | Sommer | An artist born in Angri, Italy. |
| Yves | Tanguy | French surrealist painter. |
| Kimmy | Tannenbaum | The usher. |
| Nick | Townsend | Theo Williams' friend. |
| M. | Tran | A professor. |
| Alex | Trebek | American-Canadian television personality. |
| Viktoria | Varga | The director at Catherine House. |
| Henry | Vu | One of the first-year students at Catherine. |
| Barbara | Walters | American broadcaster. |
| Johan Hendrik | Weissenbruch | A Dutch painter. |
| Theo | Williams | A first-year student at Catherine House. |
| ABBA | | A Swedish pop supergroup formed in Stockholm in 1972. |
| Alexander | | One of the students at Catherine House. |
| Amy | | A rabbit. |
| Andie | | A second-year student at Catherine House. |
| Andrea | | One of the students at Catherine House. |
| Ann-Margret | | American-Swedish actress. |
| Billie Jean | | A snail. |
| Bunny | | Yaya's acquaintance. |
| Burt | | M. Neptune's friend. |
| Crystal | | One of the skanks. |
| Daphne | | Viktória's assistant. |
| Deandra | | A second-year student at Catherine House. |
| George | | A new materials concentrator. |
| Gerald | | A mouse. |
| Glo | | Yaya's acquaintance. |
| Homer | | The presumed author of the Iliad and the Odyssey. |
| Jason | | Baby's admirer. |
| Mandy | | Ines' acquaintance. |
| Maria | | An aide. |
| Marina | | One of the students at Catherine House. |
| Paola | | One of the international students at Catherine House. |
| Raphael | | Diego's acquaintance. |
| Robert | | Anna's crush. |
| Russ | | The aide. |
| Sandy | | A student at Catherine House. |
| Sophie | | Theo's date. |
| Ursula | | A first-year student giving tattoos. |
