Anonymous
Unknown
noun, の adjective
Someone with "nothing" for their name is either trying to remain anonymous or is simply unknown.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
フグは、無名のまま死にたくないと思っている。
Fugu doesn’t want to die in anonymity.
彼女は大物だが、無名の新人歌手にも親切だ。
She's a big name, but she's also kind to unknown, new singers.
若手のアーティストの中には、無名でも良い作品を作る人がたくさんいます。
Among young artists, there are many anonymous artists producing good work.