March is the third month of 2019.
- 2 March - Chris attempts to contact Elon Musk because a joke he told on The Big Bang Theory was similar to Chris' beliefs about dimensions.
- 4 March - Chris writes the letter that he would later leave in DeJarnette.
- 4 March - Chris expresses his displeasure to Sonic's design for the upcoming live action movie, paying special attention to the blarms.
- 7 March - Chris uploads Very Cool Birthday Present! :), revealing that Sarah and Steve sent him a Nintendo Switch for his birthday.
- 7 March - Bryanfrogboy makes a video defending Chris.
- 8 March - Bryan deletes his video.
- 11 March - Chris announces that one of his husbands, Mewtwo, is ill from a brain virus.
- 12 March - Chris lists a pair of his customized sneakers for sale on eBay for $200. Jacob Sockness buys it later that day.
- 13 March - An eyewitness video of Chris shopping at a GameStop is uploaded. Chris tweets about Zak Kayes, a pedophile who he deems to be safe because of the confirmation from his OC.
- 14 March - Chris demands that his house, the Sonichu Headquarters, be made into a Pokéstop for Pokémon Go.
- 17 March - Sonichu's 19th anniversary; Chris tweets how he almost forgot that fact.
- 18 March - Chris tweets about Sonichu and Rosechu anatomy.
- 22 March - Chris goes ghost hunting with Copitz; their exploits were posted the next day.
- 30 March - Chris uploads Goodwill Offering and Kindest Wishes, where he pays respect to those abused at the DeJarnette Sanitarium by leaving a Sonichu drawing.