Those creatures, those aren't robots. They're humanoids. They're what's left of the original crew.
8 seconds sound clip from the The Black Hole (1979) movie soundboard.
You can hear this line at 01:03:21.097 in the Blu-ray version of the movie.
Quote context
[...]
- Alex! Could I have a word with you?
- B squared... Over a squared, sine squared, data...
- Do you remember what we were talking about the other day?
- We've gotta get out of here.
- What?
- Yes.
- Those creatures, those aren't robots. They're humanoids. They're what's left of the original crew.
- What's wrong, miss Kate? You look ill.
- Kate's upset because I've elected to stay with the Cygnus.
- I hope she's electing also to stay with us.
- No, I...
- The right moment to go into the black hole is now.
[...]