Who started “Double Rainbow”?

Paul Vasquez / Hungrybear9562, on YouTube, Jan 8, 2010. It reached 5 platforms in 10.3 years.

LineageKey steps, 12 of 16. Lines follow time and platform
Yosemitebear Mountain Double Rainbow 1-8-10Paul Vasquez / Hungrybear9562First postJimmy KimmelXDouble Rainbow | Know Your MemeBill SimmonsXPlatform jumpPlatform jumpPlatform jumpPeakPlatform jumpPlatform jumpPlatform jumpCommercialAfterlifePatient zero