This famous American YouTuber, inventor, and engineer is named Mark B. Rober and he is known for his science videos on YouTube, creative ideas, and gadgets. Previously, Mark Rober spent nine years as an engineer at NASA and four years as a product designer at Apple Inc. While working at NASA, Rober began making viral videos that became popular all over the Internet. And the following year, Mark B. Rober launched the online company Digital Dudz to produce Halloween costumes that were widely shown on news channels. The cool YouTuber cursor for a mouse with Mark Rober and Logo!