分久必合，合久必分

分 = 八 + 刀 : Symbol for this character: A stopwatch (from the meaning "minute"). Frankenstein's monster (f) participates in the annual championship of chopping eight-balls (八) in front of the encampment ((e)n1). Using a cleaver (刀), he chops (kind of divides / separates (分)) as many eight-balls as he can in one minute (分).

久 = ㇏ + 勹 : Mnemonic symbol: an hourglass.

Joan of Arc (ji) has been waiting for ages (久) for the elephant (勹) to get up from the outhouse's living room (ou3) sofa. She point towards a huge expired hourglass (久) and pokes him with a finger (㇏) to make him finally get up.

必 = 丿 + 心 : Mnemonic symbol: 忽必烈 [Hū​bì​liè​], Kublai Khan. Certainly (必) Kublai Khan (必) has to keep face, but he cannot hold it any longer. In the space station's bathroom (Ø4), He absolutely has to (必) tell Brunhilde (bi) his love for her strong character and offers her his heart (心). Brunhilde is a bit embarrassed because all she has to offer in return is a banana (丿). Kublai Khan feels like his heart has been crossed out (the 丿 stroke is crossing out 心 in 必).

合 = 亼 + 口 : Mnemonic symbol: a tube of glue.

In the elevator's kitchen (e2), Hamlet (h) is preparing holiday decorations. He wants to be lazy and cover Halloween as well as Christmas at the same time, so he carved out a mandarin (口) and glued a pointed cap (亼) to its top using a tube of glue (合).