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Xtramath Guy / Mr. C / Xtramath Memes
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About
Xtramath Guy or Xtramath Memes refers to memes and internet discourse about Mr. C, a Seattle-based teacher named Christopher Roberts featured in videos made for the online supplemental math program Xtramath. Xtramath was started in 2007 by David Jeschke to aid in national math proficiency efforts. In memes, Xtramath and Mr. C are typically referenced by internet users who share various screencaps from Xtramath videos featuring Mr. C in a red polo shirt, often to recount the horrors of having to undergo after-school math programs or depicting him as a villainous character.
Origin
Xtramath was started in 2007 by David Jeschke, a former Microsoft programmer and startup developer. According to Xtramath's official website,[1] Jeschke thought of building the Xtramath program while volunteering as a math tutor for Seattle elementary school students where he recognized the need for an individualized math fact practice program.
On November 9th, 2017, Xtramath's official Twitter[6] account tweeted about the real-life identity of "Mr. C," the person wearing a bright red shirt featured in the videos made by the program. Mr. C's legal name is Christopher Roberts, a national board-certified teacher from the Seattle district (seen below).

The earliest known meme about Xtramath[2] posted to the internet is a YouTube video titled "Welcome to Xtramath," uploaded by user PatrickPower on March 2nd, 2019. The video gathered 20,000 views and nearly 300 likes in three years (seen below).
Spread
On October 21st, 2019, eBaum's World posted a listicle[3] with a compilation of Xtramath memes, along with a byline that read "the guy from the XtraMath videos is creepy AF." The list contained a series of memes concerning Mr. C and his supposedly annoying characteristics (examples shown below).


On November 19th, 2019, Redditor[8] Guynapple posted a meme to /r/vibecheck titled, "You failed the Xtramath vibe check." The post gathered nearly 200 upvotes in two years (seen below).

On May 12th, 2020, YouTuber[4] Orange9098 posted a compilation of all Xtramath videos featuring Mr. C. The video has gathered nearly 50,000 views in two years (seen below).
Also on May 12th, parody TikTok[5] account @xtramathguy posted a video posing as Mr. C. The post gathered over 40,000 views and 1,900 likes in two years (seen below).
https://www.tiktok.com/embed/v2/6826173105946266885
On April 4th, 2022, TikToker[7] @aaeditsandfigs posted a video of Mr. C saying, "It appears that you are typing in wrong answers on purpose again. I sent a note and email to your teacher and parent letting them know. I believe that you can do this, but you are going to have to do your part." The post gathered over 3 million views and 400,000 likes in five months (seen below).
https://www.tiktok.com/embed/v2/7082900215111666990
Various Examples




Search Interest
External References
[2] YouTube – PatrickPower
[3] Ebaums World – Xtramath Guy
[4] YouTube – Orange9098
[5] TikTok – @xtramathguy
[6] Twitter – @Xtramath_US
[7] TikTok – @aaeditsandfigs
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