Vanilla the Rabbit
Vanilla is a flavoring. The plant it grows on is a vine. It grows by climbing other plants, like trees. It is derived from orchids in the genus Vanilla. The pure (man-made) form of the flavoring is known as vanillin. The main species harvested for vanilla is called Vanilla planifolia.
The plant was brought back to Europe by the Spanish. In Mesoamerica it was a well-regarded spice.
Today, most of the flavoring is done in chemical laboratories.
Vanilla The Rabbit is often considered the most pointless of all of Sonic's friends and the only non-playable furry outside of Marine in any game, she has had cameo roles at best in Sonic Rush and was briefly mentioned in Sonic Advance 2 because Dr. Robotnik kidnapped her or some shit. Vanilla's literally only purpose in the entire series is to give perverts something to draw porn of, however unlike Sally Acorn, that's all she's good for.