1: [Young]
Even as seedlings, Barrbs are a teensy bit prickly. What with their burs and thorns. Yet, for all their surface thistles they remain soft, sappy souls that feel emotions all the way down to their roots. A Barrb's song is a scratchy, catchy one and is sung with wisdom far beyond its tender years. Barrbs are prone to hiccups and fits of the giggles, often at the same time.
2: [Adult]
Native to arid climes, the prickly Barrb has a raspy singing voice that evolved due to its dry ancestral homeland. It stores water in its fleshy tissues giving it a bloated appearance, while its burs attach themselves to unsuspecting monsters passing by. Hence, Barrbs get very attached to others- literally! They try to keep a polite distance for fear of matting up their chums' luxurious fur.
3: [Prismatic]
This Barrb returned from the Prism Gate forever changed! The transformative power of the dimension beyond has distilled the Monster's essence down to a primordal gel, draining the body of color and leaving it as little more than a marionette to be manipulated by the puppeteer perched up top - extraordinary!