异性

异 = 巳 + 廾 : Maud Younger sees a wyvern in the space station's bathroom and thinks it's soo strange that there's a wyvern in the space station. But after all, it's just the lab snake which ate a double axe.

異 = 共 + 田 : Maud Younger (y) has been sent off to help the communist (共) tending the field (田) in the space station's bathroom (Ø4). She proves very helpful as her secret strange super power (mnemonic symbol for 異), xray vision, helps her see whether the potatoes are ready or not.

性 = 忄 + 生 : Marie Curie had a strong character since she was little. Even in her cradle in the engine's bathroom she was only playing with a flail.