Trekkie Monster from “Avenue Q” by Rick Lyon.
“Trekkie is Oscar the Grouch’s and Cookie Monster’s alter-ego, in the award-winning Broadway play* Avenue Q, an adult parody of Sesame Street. He is obsessed with social media and has made millions of dollars by investing in it. (In a previous iteration, the original Trekkie was obsessed with Star Trek, hence the name.”
*To be more precise: Avenue Q was the 2004 Tony-winning best musical.