不特

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.

特 = 寺 + 牛 : Tecumseh (t) has a very special (特) mount: In contrast to the other Indians he rides a bull (牛). Moreover, the bull is so special (特) that it meditates in front of the Buddhist shrine (寺) in the elevator's bathroom (e4) together with Tecumseh.