不诚实

不 = 丆 + 卜 : Bruno Bear (bu) is setting up a wind wheel (丆) with a voodoo staff (卜) in the space station's bathroom (Ø4). He also puts a "forbidden" sign (mnemonic symbol for 不) on it, to make clear that it may not (不) be stopped.

诚 = 成 + 讠 : Charlie Chaplin (ch) wants to visit engine, but he's held up at the entrance ((e)ng2). If he wants to enter he has to pass a lie detector test first. He readily takes the test and answers all questions very honestly (诚), and the progress bar mounted on top of an advertising column (讠) shows steady progress. At the very end however the progress bar is stuck at 99% (成) and won't progress regardless of how honest (诚) Charlie answers his questions.

实 = 头 + 宀 : Sherlock Holmes welcomes professor Skull just inside the entrance of the space station. Professor Skull has not a complete head but only a skull, and a solid understanding of solid state physics. She really is an honest person and still wears her graduation cap.