This almost deserves its own badass tag

Looking at the colours, I'd say they look more like Moominpappa and the Joxter, instead of their sons.
Though, I've only ever watched one of the TV adaptations, so I suppose these could be from another show?

Snufkin looks like Kira in this. "Just as planned"-face xD

Indeed that is Joxter, not Snufkin. The difference being the nose and the weaved thing in his hat.

Actually, I'm not so sure about this one. Only Joxter is supposed to have a red nose, but he also has a red hat. The character seems to be some kind of mash-up of Joxter and Snufkin, at least according to his accessories.