Lennart was born in Stockholm, Sweden and when little he played the role of Daddy Bear in Goldie Lock, but it wasn't until later years that the acting got a hold of him. Lennart is autodidact and prefers the teachings of the classical Masters such as Konstantin Stanislavskij, Michael Chekhov and Keith Johnstone. Lennart has Swedish as his native tongue and speaks AE fluently. Lennart was the co-founder of Nacka Community Theater in Stockholm, Sweden. Lennart is being equally cast as the "homey" dad, boss and white-collar worker, as the amicable psychopath that goes haywire. One reviewer has described his acting as "delightfully intense". Lennart is equally comfortable on stage as in front of the camera, but by chance most of his roles have been on TV and film.