Drednaw is one of two poke-turtles introduced in generation VIII – its pre-evolution is Chewtle. It is one of the Pokemon that can take the form of Gigantamax (one of two turtles, the other one is of course Blastoise).
Below is a list of episodes in which this Pokemon appears – the first number is the episode number “in general”, the second is the episode number within the subseries, JN means Journeys. Episode numbers according to the schedule on Bulbapedia.
1097 – JN012 – Flash of the Titans! – Drednaw appears! He Gigantamaxing, as the fourth Pokemon in the anime!
1098 – JN013 – The Climb to Be the Very Best! – Continuation of the Gigantamax Drednaw storyline. Chewtle makes his debut here.
1112 – JN027 – Toughing It Out! – The outline of Gigantamax Drednaw appears. And there is also a knocked out Chewtle being carried by the trainer.
1128 – JN043 – Sword and Shield: The Darkest Day! – The outline of Gigantamax Drednaw appears.
1143 – JN058 – A Rollicking Roll… Eyes on the Goal! – An episode whose second section is completely turtle, with all the Poke-turtles appearing in it (existing at the moment of the episode’s premiere, of course), including Drednaw. We have screenshots from this episode separately, in this note.
1212 – JN127 – Just a Scone’s Throw From Here! – Drednaw appears in a Flashback.
