It is a Kowalski (Japanese voice) cover of "Roshin Yuukai".

▼ 【ペンギンズ人力】 炉心融解 【コワルスキー(UTAU)】

I was in charge of the illustration.

It's a great cover, so please give it a listen!

The person's account has uploaded several UTAU videos of the Penguins and other Penguins-produced videos by Japanese fans.

▼ 【ペンギンズ人力】マーシャル・マキシマイザー【コワルスキー(UTAU)】

Here is a UTAU video generated from Kowalski's Japanese audio.

▼ 【ペンギンズ人力】QUEEN【隊長(UTAU)】

Here is a UTAU video of Skipper (Japanese voice)

▼ 【手描きペンギンズ】にっこり^^調査隊のテーマ【12人合作】

This video is a joint production by 12 Penguins fans in Japan.

I was involved in only the above three videos.

But this person's account has uploaded several Penguins-produced videos by Japanese fans.

ワトレイ(ワト)

⚡👻(⚡)

『She's mine!』

🍷Shadow Olympus details🍷