Sources:
John Lennon - http://www.mirror.co.uk/3am/celebrity-news/john-lennons-dark-side-domestic-6481985 https://broadly.vice.com/en_us/article/you-dont-have-to-imagine-john-lennon-beat-women-and-childrenits-just-a-fact http://listverse.com/2012/05/12/top-10-unpleasant-facts-about-john-lennon/
Dr. Seuss - http://www.nydailynews.com/entertainment/children-book-authors-article-1.2356759  http://www.history.com/news/9-things-you-may-not-know-about-dr-seuss
Michael Jordan - http://bleacherreport.com/articles/1943095-top-10-stories-of-michael-jordan-being-the-greatest-jerk-of-all-time https://www.reddit.com/r/nba/comments/473ctu/what_is_your_favorite_michael_jordan_being_a_jerk/ http://www.thesportster.com/basketball/top-15-insane-michael-jordan-stories-you-should-know/
Steve Jobs - http://thehustle.co/steve-job-insults https://www.quora.com/Was-Steve-Jobs-really-such-an-asshole-like-it-is-shown-in-the-movie-2015 http://www.businessinsider.com.au/steve-jobs-jerk-2011-10#a-different-kind-of-fda-1
Mozart - https://en.wikipedia.org/wiki/Mozart_and_scatology http://www.huffingtonpost.com/2012/07/05/mozart-dirty-letters_n_1651332.html https://www.ncbi.nlm.nih.gov/pubmed/1286388
Mother Teresa - Read Christopher Hitchens' book, THE MISSIONARY POSITION - http://www.huffingtonpost.com/2013/03/04/mother-teresa-myth_n_2805697.html http://bitchspot.jadedragononline.com/2013/04/24/mother-teresa-was-no-humanitarian/
Elvis Presley - https://www.landoverbaptist.net/showthread.php?t=90902 http://www.godlikeproductions.com/forum1/message898134/pg1
Mahatma Gandhi - http://www.cracked.com/article_20364_6-famous-geniuses-you-wont-believe-were-perverts.html https://nambikaionline.wordpress.com/2014/06/04/mohandas-karamchand-gandhi-slept-with-12-year-old-female-virgins-hsi-laii-his-failures-and-sexual-perversion/ http://www.ign.com/boards/threads/gandhi-was-a-pervert-an-imbecile-and-a-dick.201037324/
Leonardo da Vinci - https://www.phactual.com/12-quirky-facts-about-leonardo-da-vinci/ http://www.artcrimearchive.org/article?id=88001
Mark Zuckerberg - https://www.quora.com/How-good-of-a-programmer-is-Mark-Zuckerberg http://uk.businessinsider.com/mark-zuckerberg-is-not-actually-a-coding-genius-2015-1