2000–2004 In 2000, she was cast as a television show host for Malaysia's
TV3 lifestyle entertainment programme
Wavelength, which began her mainstream career. She was soon cast in her first film role as one of the leads in
Aziz M. Osman's
Seri Dewi Malam alongside popular actor Hairie Othman. Later that year, she played a girl living in a rural village in her second movie
No Problem which was a box office failure. She won the New Popular Artist Award at Malaysia's Anugerah Bintang Popular Berita Harian and the Anugerah Media Hiburan in 2001. In 2003 she was cast in a supporting role in, Mr. Cinderella 2. In mid-2004, she was cast by director
Shuhaimi Baba in the lead role in
Pontianak Harum Sundal Malam. She won the Best Actress Award at the 49th Asia Pacific Film Festival 2004 in
Fukuoka, Japan. She also received her first nomination for Best Actress in a Leading Role at the
Malaysia Film Festival.
2005–2010 In 2005, Roelcke reprised her role as the lead in
Pontianak Harum Sundal Malam II and won Best Actor (male/female) at the Estepona Fantasy and Terror Film Festival 2005 in
Málaga, Spain and, her second nomination for Malaysia Film Festival's Best Actress. Roelcke also won the Most Popular Actress (Film) Award at the Anugerah Bintang Popular Berita Harian 2005. Despite her growing film career, Roelcke continued her involvement in television, and in 2004 she was invited by
Channel [V] International to join their VJ team. In 2006, she was voted Best VJ in Star Buzz Editor's Choice Awards 2006. Other shows that she has hosted are the bridal programme 'Ratu Sehari' (Queen for a Day) in 2004 for Malaysia's Astro Ria channel and the travelogue programme 'Beauty Secrets From The East' in 2005 for TV3. In 2007, Roelcke played a variety of lead roles in Pesona Pictures'
Waris Jari Hantu and
1957: Hati Malaya and Tayangan Unggul's
Anak Halal and continued to receive nominations for various awards. Karin won Best Actress Awards at Malaysia Film Festival and Anugerah Oskar Malaysia in 2008 for her portrayal of a
tomboy girl in
Anak Halal. In 2008 she began to play comedy film roles. Beginning with
Duyung in 2008, she played the title role of a
mermaid, performing all the underwater scenes on her own in the open sea of
Sipadan Island. In the same year, she received her second Most Popular Actress (Film) Award at the Anugerah Bintang Popular Berita Harian 2008. In 2009, she starred in
Pisau Cukur, a comedy film about gold diggers where she performed more comedy scenes than her role in
Duyung. In 2010 in the romantic comedy movie
Cun, she played a famous entertainment show host who falls in love with a man from a rural village alongside Remy Ishak.
2011–present: Career challenge and further success In November 2011, Roelcke had her biggest commercial success
Ombak Rindu, where she played a young women from a rural village struggling with life and love For this she won the Best Actress Award at both the
Anugerah Skrin and Malaysia Film Festival in 2012 and her third Most Popular Actress (Film) Award at the Anugerah Bintang Popular Berita Harian 2011. After
Lagenda Budak Setan 2, she appeared in
Sejoli, wher she portrayed a girl looking for her true love, gaining her Best Actress award in Comedy Role at the second Anugerah Lawak Warna in 2014. Next were
Jwanita and
Nota, a collaboration between local and Japanese film producers. In 2017, Roelcke appeared in the horror film,
Munafik 2 directed by
Syamsul Yusof, becoming the highest-grossing Malaysian film to date with a record of RM48 million in sales, also gaining commercial success in Indonesia, Brunei, and Singapore as well. == Musical career ==