Artist, niconico video creator.
”Makonyan Dance” is his creation.
Japanese name: たたた (tatata)
Other name: 多田 夕 ("Oota Yuu" or tatata)
Name as a video creator: 777P ("Seven-P") or 777 ("Seven")
Site name: ろりぽ (RORIPO or RORI-PO)
Blog name: SICHISAN21 (シチサンニジュウイチ)