On October 29, 2016, 123zc started making videos on his YouTube channel explaining the LORE of SiIvagunner, with the first being the about the Reboot, particularly of the ARG that went along during that period.
He has received over a million views on his channel, mainly due to the SiIvaGunner Explained series. As of April 2018, the SiIvaGunner Explained series contains 24 episodes.
- See also: Category:123zc
He has made contributions to the channel such as "Ending - Club Penguin", "Reveal Trailer - Call of Duty: Black Ops IIII", "An AWESOME Announcement!", "Doctor Louie's Interior - The SpongeBob SquarePants Movie", and his Chills impressions in "Testimony - Yoshi Commits Tax Fraud" and "Nyx - Persona 3". He has also helped with theory crafting and explaining the story behind the channel, particularly useful to new viewers who wish to understand videos like "Theme Song - Caillou" or The Bean.
- "SiIvaGunner Explained" - YouTube playlist of the series
- "123zc" - YouTube playlist of 123zc's contributions