Karlsson is known for his offensive ability. He is a defenseman blessed with excellent hockey sense, confidence and coolness. Everything looks so easy and natural when Karlsson has the puck under control in the offensive zone. He is a terrific passer and an outstanding push rusher.



The knock on Karlsson is his defensive game and size. However, his all-world skating and anticipation allows him to be alright defensively.

The fact that Karlsson likes to get involved physically and can deliver rather good hits is a big plus. Now that he's added a considerate amount of bulk, his physical play is more effective.

- Elite Prospects (2015)



Father: Jonas Karlsson, Brother: Pelle Karlsson

Uncle: Tomas Nord

Cousins: Jonas Nord, Anders Nord