for Clatons effect of

The player who control the World Card where this card is place cannot choose to escape if he/she does not control at least one Friend or Magical Friend Card

does that also apply to Dark Friend Cards?

yep. as the Dark Players state, the Dark Friends are treated as both Friends and Dark Cards

dammit.

I was hoping to use Clayton againist Dark WR's .....oh well there is always Sleath Sneak.

Stealth Sneak would have been better than clayton either way cause they can over power clayton with stealth sneak they must run away cause they dont have any dark cards with a discard effect. and stealth sneak is lv4 so you can screw them over in the beginning.

no i was thinking about my match with demonofturks (2nd time)

Clayton would have stalled him escaping from Sleath Sneak long enough for me to beat him into submission

lol i'm still learning how to play with just friends, now there is dark friends