'Who the hell is she?' Viewers slam The Masked Singer finale and savage Bonnie Anderson's win after she was unmasked as The Bushranger

Neighbours star Bonnie Anderson, 25, was sensationally unmasked as The bushranger during The Masked Singer's grand finale on Monday. 

And while plenty of viewers were thrilled with the results  - many had no idea who she was. 

Soon after she was announced as the winner, fans of the show voice their bitter disappointment on Twitter with savage criticism. 

'Who the hell is she?' Viewers have slammed The Masked Singer finale and savaged Bonnie Anderson's win after she was unmasked as The Bushranger on Monday night 

'Who or what is a Bonnie Anderson...At 28, I've actually aged out of The Masked Singer. Sayonara season three,' one viewer wrote.  

Another added: 'I obviously don't know enough about the Australian entertainment industry, I have never heard of Bonnie Anderson.' 

Mixed reaction: Soon after she was announced as the winner, fans of the show voice their bitter disappointment on Twitter with savage criticism.

While another was more concise: 'I'm just here for all the 'who the f**k is Bonnie Anderson' tweets.' 

Best known for her role as Bea Nilsson on Neighbours, Bonnie is also a singer-songwriter and was the first winner of Australia's Got Talent in 2007, at age 12.   

Meanwhile, a number of Bonnie's fans were elated over her win. 

Famous face: Best known for her role as Bea Nilsson on Neighbours, Bonnie is also a singer-songwriter and was the first winner of Australia's Got Talent in 2007, at age 12

'Well done Bushranger aka Bonnie,' one fan wrote. 

Another added: 'YESSSSSS BONNIE ANDERSON.' 

Meanwhile another wrote: 'Yayyyy Bonnie was the bush ranger!!!!!' 

Runner-up: Bonnie beat out runner-up Kate Miller-Heidke, who was unmasked as The Queen earlier in the episode

Meanwhile, Bonnie thanked her fans for their support.  

'I can finally stop keeping secrets about what I've been up too for the last couple of months,' she wrote. 

'Being part of The Masked Singer has been the most memorable and special experience for me on so many levels.' 

Nearly there: Earlier in the episode, The Last Day On Earth singer said after being unmasked: 'I had so much fun. It was just crazy and one of the most extreme experiences I've ever had' 

She went on to say she was grateful for working with such an 'epic' bunch of people, who made the show 'enjoyable and safe'.  

Bonnie beat out runner-up Kate Miller-Heidke, who was unmasked as The Queen earlier in the episode. 

The Last Day On Earth singer said after being unmasked: 'I had so much fun. It was just crazy and one of the most extreme experiences I've ever had.'