[quote=Rin]
As much as I find Bjorn's 1d4chan page hilarious, you shouldn't use it as a reference if you actually intend to play him. It's less about him as a character and more about him as a meme, and not exactly an accurate summation of him at all.
[/quote]

Bjorn has very little personality, in the actual Games Workshop material, nothing beyond "Grrr, I'm a big space marine with a beard!!!" At least /tg/ gave him some personality tropes, such as hating Russ, Resenting his internment in stasis, having likes and dislikes... See, Games Workshop don't seem to know the difference between "Being a well rounded character" and "Having a character that does cool shit." Bjorn does cool shit all the time, but as for personality? Non-Existant. /tg/ actually gave these guys unique personalities, so, all in all, it's actually the best reference to go off of. It's either that, or just have him be the big angry space marines that is a little too obsessed with wolves and Leman and The EMPRAH!!!