My favorite Triple Threat dynamic is that one of them will get into shenanigans and the other two will have to bail them out, but the one who causes the trouble changes.
When Henry starts shit, it’s usually petty and dumb, but not always illegal. He’ll do things like write swear words on the cafeteria white board on base, or pour chili powder into someone’s mild sauce. Sometimes he decides to do something illegal at the last second just to watch the other two gasp in shock. He once stirred a bit of toothpaste into a glass of orange juice, but Ellie dumped it out before anyone could drink it (thank god).
When Ellie starts shit, it’s reckless and often illegal, ranging from open mockery to crude graffiti to minor arson. She’s the type of person who loves to teach bad words to kids, and she always leaves a fake ticket on her car so she can park in red zones without punishment. She once tried to steal a car, but Charles got her out of that at the last second.
When Charles starts shit, it’s not illegal, but that doesn’t mean it’s ever a good idea. He’ll do things like make a smoothie with coffee and doritos, or make fake spiders and cover the floor with soapy water just to see what will happen. One time, he poured salt instead of sugar into his coffee out of sheer curiosity, which, sure, isn’t illegal…but what the hell? Very much innocent “boys will be boys” energy.