I knew about it long before I got to see the episode (somebody spoiled it in one of the magazines). It was fitting that the end credits were absolutely silent, showing Adric's broken Badge of Mathematical Excellence, and it annoyed me greatly that during the 50th anniversary marathon (Earthshock was the episode chosen to represent the Davison era), they used the same bright, spangly music at the end as for all the other episodes.I remember being an occasional watcher of DW at the time and I liked Adric fine. I found his death quite shocking and saddening (but I was only about 10 or 11, admittedly).
Adric was a misfit no matter where he was. He was an outsider among his peers on his home planet - too smart and serious to hang around with his brother and his friends, and too young to be accepted as an equal among the adults. No sooner had he earned some respect from his brother, then his brother was killed.^Ditto. I have a friend who's still traumatised by the death of Adric!
My view of Adric seems to be constantly shifting. Back in the day I had no problem with him, but later I came to realise what a terrible actor he is, that said the last few times I've watched Adric episodes I've found the character more interesting than I gave him credit for. He's a git, and not above siding with the bad guys, or at least being taken in by the bad guys, which is a refreshing take for a companion.
He's probably my least favourite companion of the Baker/Davison era but I don't hate him nearly as much as I used to.
In the TARDIS it was a similar story - he was too-whatever (smart, serious, moody, etc.) to be completely accepted by the Doctor and Tegan. Nyssa was the only one who liked him for himself, and that was largely due to their becoming friends on Traken.
Yes, Adric was somewhat selfish and self-centered. He'd grown up being constantly praised for how smart he was, and he naturally assumed he was smarter than almost anyone except the Doctor (Fourth) and Romana. I think he redeemed himself at the end, and came full circle (
