Pusu (ぷす), formerly known as Zips (じっぷす) is a VOCALOID producer mostly known for his famous utattemita song Asagao no Chiru Koro ni.
He started covering songs in 2014 with the first cover "Umiyuri Kaiteidan" on NND, considering as an utaite who has a nasal, cool voice and ikemen look. Despite this, he often sang songs in parody style and did some weird, sometimes perverted, live action movie for his cover, such as in his self-cover of "Pantsu Hero". It is noted that he posts a lot of professional "one man did all" short covers on his twitter but never makes any full version from them.
In late 2015, he decided to change his name from Zips to Pusu before releasing his utattemita CD Phantasm Hero with other utaite in Comiket 89. Then, he deleted or set all his previous covers in private.
In late 2016, he made the duet unit with his fellow utaite Miyakawa-kun become officially, named Miyapusu, and has more activities under this unit in recent.
At present, his most popular cover is "Charles" which quickly gained 75k views in 10 days.
For more information on Pusu as a producer, please visit his article here on the VOCALOID wiki.