Rainbow goblins drop gold and items and behave exactly as a normal Goblin does. There is a total of 19 pets, so you need 19 of this goblin to get all the pets. Make sure to call out a Rainbow Goblin. HIGH chance of spawning. HIGH chance of spawning. The Menagerist and the Rainbow Goblin was added to the 2.4.1 patch for Diablo 3, and are much sought after, due to their ability to drop cosmetic items. Act 2 - Sewers - Sewers of Caldeum and Ruined Cistern. The Rainbow Goblin (or RG) is a rarely-seen, rainbow-colored version of the Treasure Goblin. Diablo 3 Rainbow/Menagerist goblin Farming locations - YouTube Act 1 - Cathedrals - Cathedral Level 1, Leoric's Passage, Cathedral Levels 2, 3 and 4 and the Royal Crypt. Their special attribute is a chance to create a rainbow portal when they die, which lets players enter Whimsydale, a special version of the Whimyshire secret easter egg level. MEDIUM chance of spawning. Rainbow Goblin — with its odd, plush-like shape and neon colors, this goblin subtype immediately stands out. The Menagerist goblin drops a pet 100 % of the time (until you have them all), and each pet will be a new one. Zero or One goblin per level - potential SIX spawns. Upon death, they spawn a portal to Whimsydale, a highly profitable easter-egg zone with several rare, highly prized transmogs. Zero or One goblin per level - potential FIVE spawns.