Mark King is one of those bassists that shouldn't be a good example, but actually is.
I mean.. Ridiculously light strings, rough fingerstyle (if you've noticed, he plucks really hard), and he just slaps too often. That would sound like bad habits for bassists.
But man can he play bass.
I think his sound comes partially from his gear too: modern voiced pickups, active electronics, the ridiculous 90-30 gauge Rotosound strings (which are frequently replaced btw) , the medium scale 32" bass (which lowers string tension even more) , and his EQ is just dominantly treble.
When it comes to technique, it's all in Mark's fingers I believe. You can try to replicate his style but you could hurt yourself trying to do so. He developed it and got used to it overtime, to the point where it's basically effortless for him. He does every technique aggressively because that's just how he learned it. That's why he wraps a white tape around his thumb, because his thumb got cut open once from slapping his bass too hard and fast during a concert.
So my advice to you is, use bright light-gauge roundwound strings, turn up the treble on your amp or EQ, and if you can, get active pickups installed on your bass, something like EMGs. And just practice his style and songs but don't injure yourself.
In the end, you should just try getting your own style and sound though. Whatever suits you best.
Hope that helps. Good luck!
