So they are canon, but you are seeing the story of a different Rick and Morty.
(If you want to blow your mind a bit, you could realize that the Rick and Morty from the pilot may not necessarily be the same Rick and Morty from the last episode of season 1, because they didn’t mention C-137 until later in the season.)
Is Rick and Morty a comic book?
Rick and Morty is a comic series published by Oni Press, based on the TV series and written by Zac Gorman. Each issue includes a main story (usually unnamed) as well as a back-up comic.
How many Rick and Morty comic books are there?
What dimension is Rick and Morty in now?
Dimension C-137 (pronounced “cee one thirty seven”) is one of the many universes in the multiverse and the universe where the mainstream Rick and Morty are often identified as coming from.
What reality is Rick from?
Earth C-137: The universe in which “our” Rick and Morty originated, which they abandoned after they “Cronenberg’d” it. This is the universe the original Jerry, Summer, and Beth currently inhabit.