This is Duke Fishron, a Terraria boss that you summon by using a special kind of bait that only spawns in the mushroom biome.

Passion vs Greed

While what you say is true this is a marketing definition not an etymological definition. From an etymological standpoint cider refers to a "fermented drink" or a "strong drink". So technically this is not really a pleonasm.

To be fair most people expect cider to be made out of apples anyway. That's why other ciders usually have different names like "Perry" for pear cider but this is mostly for selling purposes aka "the consumer is dumb as a rock so let's make it obvious it's not the same product" not a way to be grammatically correct.

You know pear cider and peach cider exist, right ?

Let me give you a hint

It's part of the spectrum