Tellico Lunngrevink Letorte, alias Penstock, but to his friends, Dudu, is a doppler who first appears in the short story "Eternal Flame" in Sword of Destiny. In "Eternal Flame", Dudu ultimately faces Geralt by taking on the witcher's own shape. This gives Geralt a very good idea of what fighting himself would be like and it is not at all certain at the outset if the "true witcher" will prevail. It all comes down to a question of conscience.
Deploy: Choose an Enemy and copy its Power.
Added to Gwent
[Dec 19, 2016] Major Update 0.8.33
- See this subject on The Witcher wiki: Dudu
- Gwent Update: Dec 19, 2016 Patch: Added.