Ninjask's "Night Slash" attack has an effect where it may switch with a Benched Pokemon. If it switches, would the Defending Pokemon's Rock Guard effect take place on Ninjask or on the new Pokemon?
Rock Guard references putting counters on "the Attacking Pokemon", so Ninjask would still take the damage counters even if it goes to the Bench.
Source: TPCi Rules Team (2013-11-21)