Fierce Guinan and COL Worf - One Time Only?

General McDuck

I know since the Voyages were updated they added the 4 new one-time only crew members. I can't find anything to say if Fierce Guinan and COL Worf are one-time only. Does anyone know if those two can be claimed more than once? Thanks! 🖖🏻

Speckles the Destroyer of Worlds

One time only, from everything I've heard.