Also known as: ジャンプの海賊マーク, ジャンプ海賊マーク, ジャーニー(週刊少年ジャンプ), ジェイミー(週刊少年ジャンプ), KAIZOくん
The logo/pseudo-mascot of Shounen Jump. It's half of a pirate's head up to the mustache, and has sometimes been portrayed as a full-bodied pirate with no mouth. A younger spinoff of the pirate named KAIZO-kun serves as the mascot of Jump Festa.
Many jokes have been made about the fact that the pirate looks like a young girl when turned 70 degrees (as in post #854325), leading fanartists to adopt the "girl" version as the logo for parody works (such as post #1860850). Eventually, Jump itself adopted this version of the logo as the mascot of their "Jump J-Books" novel imprint, naming her "Jamie".