Board Thread:Manga/@comment-39492511-20200209043309/@comment-1327106-20200210040334

Your reaction to her name is one that many of us have had. I was hoping it was the translator having a brainfart, but when I looked at the katakana it's フィンガー which is a really good rendition of "Finger" so I'm not surprised the translator went for that (probably while wondering what Isayama was thinking).

If Isayama was going for something else but couldn't approximate it as well in Japanese, I expect it'll be corrected later in the volume release.