Throughout the history of Knowing Bros, this segments is shown on both TV and YouTube, after the end of a Knowing Bros episodes.
An official corner of the show after the Brother School segment for the episode has ended. Jang Sung-kyu, Shindong and Jeong Se-woon would let guests (different from in Brother School), as Variety Job Lookers, to prove their variety skills to the three.
Kang Ho-dong, together with Shindong (Super Junior), visits various idols and learn idol songs choreographs. Several other guests will then watch the final dancing videos and comment on them. This activity lasted from July 11 to October 24, 2020.
Universe Cowards (Kim Hee-chul, Min Kyung-hoon) visit rappers and learn hip hop and rapping from them. This activity began from October 31, 2020, to January 2, 2021.
Through this activity, Kim Hee-chul and Min Kyung-hoon have released a new hip hop single "Hanryang" (), which is produced by DinDin and features BIBI. The single was released on December 20 at 00:00 (KST).
As a fulfillment of their promise for the "Hanryang" () music video reaching 1 million views in 24 hours, Universe Cowards held an online fan-meet on January 14, 2021, with special guests DinDin, BIBI, and Ateez.
Seo Jang-hoon and Lee Soo-geun, a duo in Brother School that is well known for their chemistry, get advice on various games, alongside Shindong (Super Junior). This activity began from January 16 to April 17, 2021.