Jasper Pääkkönen (born July 15, 1980) is a Finnish actor and entrepreneur. Pääkkönen became famous in Finland playing Saku Salin in the Finnish television soap opera Salatut elämät (1999–2002) and have since then starred in many #1 Finnish box office hits, including Bad Boys (2003), Matti: Hell Is for Heroes (2006) and Lapland Odyssey (2010). He made his international breakthrough role in historical drama television series Vikings (2015-2020) as Halfdan the Black. In March 2019, it was reported that Pääkkönen had been attached to Spike Lee's Netflix original film Da 5 Bloods. A week later, it was announced that Pääkkönen had also landed a major role in the upcoming Black Tower series based on the novels by Stephen King, but the series was subsequently cancelled in early 2020.