Further exploiting the rumor to the hilt, it also mentioned that Anna will also found out that she is just an adopted daughter of the deceased King and Queen of Arendelle so she will be jealous of Elsa and Rapunzel and she will turn to her dark side with the power of fire to rival that of Elsa and Rapunzel, notes Breathecast.
However, until a confirmation is made by Disney Pictures or Chris Buck or Jennifer Lee regarding this rather unorthodox storyline, everything should be taken with a fine grain of salt.
Anna being the villain in the current speculations seems to be patterned after a previous report that went around last month saying that a new female villain from Arendelle will come out and make life difficult for Queen Elsa and Princess Anna.
According to the report, the villain shall have powers that shall be opposite of Queen Elsa’s which could possibly mean that the nemesis could heat things up, perhaps using fire.
While no details have been made officially on this supposed villain, there are also hints that it is also possible that Princess Anna will also showcase her superpower in “Frozen 2,” a notion which Jennifer Lee debunked when she said that Anna’s power in the first movie is love and that’s all there is to it.