T-Series temporarily overtook PewDiePie in subscribers on numerous occasions starting from February 2019. ' Bitch Lasagna', a diss track by PewDiePie against T-Series, and the use of anti-Indian remarks by some of his fans (which PewDiePie would later criticize), led to several prominent Indian YouTubers publicly opposing PewDiePie and backing T-Series with YouTube videos and response diss tracks.

The activism of some supporters extended beyond legal grounds vandalism, hacking of websites, social media accounts, personal devices and the creation of malware had taken place to urge people to subscribe. Supporters of PewDiePie often used the slogan 'Subscribe to PewDiePie'. Many of his fans made efforts to gain subscribers for his YouTube channel in numerous ways, including organised marches and supportive YouTube videos.

Many YouTubers voiced their support for PewDiePie, including Markiplier, Jacksepticeye, MrBeast, DanTDM, KSI, H3h3Productions and Logan Paul. The rivalry between the two YouTube channels began when T-Series' subscriber count began to near PewDiePie's in late 2018. T-Series has held the title of most-viewed YouTube channel since February 2017, and PewDiePie had been the most-subscribed YouTube channel since August 2013. PewDiePie vs T-Series was an online rivalry between two YouTube channels, PewDiePie (run by Felix Kjellberg) and T-Series (run by an Indian record company of the same name) for the title of the most-subscribed YouTube channel. T-Series overtook PewDiePie as the most-subscribed YouTube channel, becoming the first YouTube channel to reach 100 million subscribers

Individual vs Corporate culture on YouTube (Only a major motivation for those against T-Series).

public competition/rivalry about being the most-subscribed YouTube channel.

B lasagna by PewDiePie