David Kai Lennart Sundin, (born 23 May 1976) is a Swedish author, television presenter and comedian.

[2] He has also done some work as a producer for segments for the television shows Sen kväll med Luuk on TV4 and Roast på Berns on Kanal5, he wrote some of the manuscript for Melodifestivalen and Welcome to Sweden.

[6] Sundin plays "Dynamit-Harry" in Tomas Alfredson's film Se upp för Jönssonligan.

[7] On 3 September 2019, Sundin was announced as a presenter of Melodifestivalen 2020 along with Lina Hedlund and Linnea Henriksson.

[8] Sundin had a leading role in the 2021 Christmas calendar En hederlig jul med Knyckertz which is broadcast on SVT.