Rasticorea is the romantic paring of Rasticore and Meteora. They are seen to have a friendship, and Meteora also nursed Rasticore back to his full body form.
Cannon Probability Edit
Although Meteora seems to have an affection toward Rasticore, Rasticore does not seem to share the same feelings making this ship unlikely. Meteora also threw a bomb at him in “Skooled”, so this makes this ship even more unlikely to happen now, and Meteora got turned back into an infant, so the big age gap just makes this ship wrong.