Land Parasite was a slur which Marsissus applied to the Thirteenth Doctor after she, accompanied by her human companions, identified him as Sea Devil. The Doctor replied "let's not get into the name-calling" and asked how he preferred to be addressed. Marsissus did not answer, and the Doctor continued to refer to him and his fellow pirates as Sea Devils. (TV: Legend of the Sea Devils [+]Loading...["Legend of the Sea Devils (TV story)"])
The Doctor confronts Marsissus. (TV: Legend of the Sea Devils [+]Loading...["Legend of the Sea Devils (TV story)"])