I've never heard of Rick and Morty, but take my advice, don't try to shop your screenplay to VCs. They took a dim view of my "Adult Stewie" concept last year (think "Young Sheldon" backwards). Try Hollywood.
Anyway, I think a fun cartoon would be the Flintstones with ceph, for example their screen could be a smaller ceph whose chromataphores are pixels.
[edit]
Old drawing, back of a napkin (apologies to MIT AI Memo 554):
Was literally thinking the Rick & Morty tie-in would be that Morty gets a pet cuttlefish who not only speaks, but insists that even though he is stuck in this aquarium, he says it is preferable to the pathetic existential prison of their inferior human minds, and he uses his mesmerizing persuasive power to turn the rest of the house into a hippie comumune of drifters who do whatever he wants, and ultimately directs them to attack celebrities. The cuttlefish's name is Charlie.
