While the series is frequently mocked for abnormal use of Rubber-Forehead Aliens, special point out need to be designed of the Tholians that appeared in the TOS episode "The Tholian Web", who were so peculiar, though visible only partly by the principal viewscreen in the course of negotiations, that the writers on their own (like anybody else) couldn't determine out what they in fact ended up implied to be for the greater aspect of 30 yrs, even.