Attacks » Primate Acting
When I use Oranguru's "Primate Acting" attack and I realize I don't want to use any of the Supporter cards in my opponent's discard pile, can I choose not to use any?
No, you cannot. If you use the attack, you must choose a Supporter card if there are any in the discard pile.
Source: TPCi Rules Team (2023-01-19)
Attacks » Primate Acting
Can I use Oranguru's "Primate Acting" attack if I have already used a Supporter this turn?
Yes, you are not playing a second Supporter, you are just using the Supporter's effect as the effect of the attack.
Source: TPCi Rules Team (2023-01-19)