Cougar
Felis Concolor
If a psion was invisible and used a psionic attack against a creature after both combatants had acted (i.e. weren't flat-footed due to initiative order) would the defender be flat-footed? What about if the attacker flanked the defender wielding a melee weapon? Or does flat-footed just apply to those who haven't yet acted in combat due to initative order?