With the tragic fan attack that happened on two members of AKB48, a Japanese all-girl band, it triggered most to think on other popular celebrities who have experienced severe crazy fan attacks themselves.

The AKB48 all girl group were in a handshake event when a guy fan identified as Satoru Umeta lunged at two of the members and attacked them with a 50 cm saw.

Even the world renowned R&B diva Beyonce had her own share of such unexpected fan attacks especially in the middle of her concert performances. The ever controversial "Bangerz" singer Miley Cyrus also had a fan attack in Melbourne, Justin Bieber thrown heavily on stage with plastic bottles of mineral water, and Rihanna forced to hit an aggressive fan with a microphone among many others.

Check out the slideshow and learn about other celebrities who you never thought experienced crazy fan attacks in their career run!

Members of Japanese female pop group AKB48
Members of Japanese female pop group AKB48 Rina Kawaei (L) and Anna Iriyama speak to the media as they are discharged from a hospital in Morioka, Iwate prefecture, in this photo taken by Kyodo May 26, 2014. A man wielding a saw slashed and injured Kawaei and Iriyama at a fan event in Japan, leaving the country stunned at the extremely rare violent crime. Mandatory REUTERS/Kyodo
Singer Beyonce Knowles
Singer Beyonce Knowles arrives at the Metropolitan Museum of Art Costume Institute Gala Benefit celebrating the opening of "Charles James: Beyond Fashion" in Upper Manhattan, New York May 5, 2014. REUTERS/Carlo Allegri
Singer Miley Cyrus
Singer Miley Cyrus performs during the World Music Awards in Monte Carlo May 27, 2014. The World Music Awards honours the bestselling recording artists from around the world. Reuters/Eric Gaillard
Musician Rihanna
Musician Rihanna attends the Cruise 2015 collection show from French fashion house Christian Dior in the Brooklyn borough of New York May 7, 2014. REUTERS/Eric Thayer
Singer Demi Lovato
Singer Demi Lovato performs "Don't Really Care/Neon Lights" during the American Idol XIII 2014 Finale in Los Angeles, California May 21, 2014. REUTERS/Mario Anzuoni
Rapper Nicki Minaj
Rapper Nicki Minaj arrives at the 2014 Billboard Music Awards in Las Vegas, Nevada May 18, 2014. REUTERS/L.E. Baskow
Justin Bieber