Day 459: The Invisible Enemy Part 2

The Invisible Enemy features one incredibly major thing that occurs within the story. It is something that changes the landscape of Doctor Who forever and will go on to define Graham Williams' era as producer. It is in this story that K9 first appears in. He instantly stands out in the story as a really cool idea, being a robot dog that can give information whenever required. The way in which he is written and portrayed is fun as well, with K9 having some sense of humour, which lends a sense of fun to the proceedings as we get to laugh with a robot dog, and not be as terrified by the monsters in this story. The character certainly worked well for the audience, where the reaction to him was so good that they decided to make him a companion at the end of the story, instead of leaving him to be a one-off like was originally planned. On top of that, he is still a character that is fondly remembered to this day, and able to be enjoyed by a modern audience thanks to the fact that we can all sit back and have fun with a robot dog.