Sirena Von Boo/cartoon

Sirena Von Boo made her 2D debut in the cartoon series in the Volume 4 webisode "Happy Howlidays" which premiered on September 25, 2014. Her 3D debut was in the Volume 4 TV special "Freaky Fusion" which premiered October 2014. She is voiced by Paula Rhodes in the English version of the cartoon.

TV specials
Sirena Von Boo and her fellow hybrids, Avea Trotter, Bonita Femur, and Neighthan Rot, have just transferred to Monster High as the latest in the line of schools they've had to transfer out of due to their natures of having two different parents, such as a mermaid mother and ghost father for Sirena. While the rest of Monster High maintains their distance from the new arrivals, Sirena lets her ability to float and pass through walls make her not care about the hybrids' problems due to her carefree, airheaded attitude. When Frankie Stein returns from 1814 with several of her friends fused together into freaky hybrids themselves, she turns to Sirena and her fellow hybrids for help with getting them used to their new forms. Sirena agrees to help after Avea accepts to lending Frankie a hand, and the hybrids are soon able to get accustomed to life at Monster High, while Frankie's freaky fused friends learn how difficult it is for the hybrids, with having two different parents, to get accepted for their birthright. When Frankie's grandfather, Victor Frankenstein, accidentally unleashes his latest attempt to create life on the Monster High of 2014, Sirena and the other hybrids help Frankie lure it back to Victor's secret lab, and bear witness as Frankie uses her very own life force to deactivate it and defuse her friends in the process, but at the cost of her own life. Thanks to Frankie having helped them be accepted at Monster High, despite their hybrid status, Sirena and the other hybrids help to bring Frankie back from the dead, and are welcomed to Monster High with open arms after helping to finish the play on Monster High's history.

Gallery
(Under construction pending screenshot contributions)