After the androids checked Goku's house they decided to have some fun in their free time.
"Come on we need to get some fun in anyways." 17 stated while getting into the van.
"What are we gonna do then?" 18 asked in a bored tone.
"Wanna go and cause some havoc in the countryside?" 17 requested.
"Sounds fun." 18 replied.
"I do not truly see the fun in destruction." 16 stated whilst climbing into the back of the vehicle.
"Well, we'll show ya." 18 said. 17 drove off to the nearest gas station and got out, leaving his brother and sister in the van.
"What do ya need sir?" the cashier asked.
"You to go and die." 17 responded.
"Oh you're one o' dem moody teens aren'tcha?" the cashier inquired.
"And you're one of those hicks who don't know when to shut their mouth." 17 retorted. The cashier looked at 17 with eyes full of pure rage. 17 responded by blowing up the gas station without missing anyone inside.
"17, why did you do that?!" 18 asked, annoyed that her brother just randomly killed people without her.
"They were annoying me sis." 17 replied in a cool and calm voice. The sound of fire caught their attention, the fire at the gas station started to spread to the forest.
"17, you are going to cause harm to the wildlife if you don't control yourself!" 16 yelled out, running towards the fire to stop it from spreading to the forest.
"I don't see why you care more about them then us 16!" 17 shot back, annoyance showing in his voice and face. 17 walked behind 16, mocking him the entire way.
"17, please allow me to show you the reason why I want to protect wildlife." 16 stated. 18 had just caught up to the two by then, she was completely confused when 16 asked this.
"Take me too!" 18 pleaded, even though she didn't have a complete grasp on what the situation was.
"Fine, 18 come along then." 16 stated. 17 and 18 followed their brother until they found a good spot, full of deer, birds, and other small creatures.
"See how calm and defenseless they are?" 16 asked.
"Yeah, still don't get why you love it so much though bro." 17 replied. 16 pointed out a little fawn who was with his parents.
"You do realize that I am based on the son of Gero," 16 informed 17 and 18, "I have his memories, his looks, and even his voice."
"But that doesn't answer my question 16." 17 stated.
"I realize that losing anyone close to you is hard, animals have feelings as well you know." 16 stated.
"I think I'm starting to grasp it 16." 18 said, trying to comfort her brother.
"Animals cannot control when they die, humans can change certain situations if they needed to save someone." 16 explained.
"That's why animals need protection and love?" 17 questioned, starting to see where his brother was coming from.
"Yes 17." 16 stated. 17 gave 16 a small hug and then 18 joined in. They let go after a good minute, then they left the area to go and find a better place for their carnage. 17 and 18 destroyed a few houses and buildings before they reached a small city.
"Wanna play 'Kill All the Humans' sis?" 17 asked.
"Yeah, first one to 100 points gets to demolish the entire city!' 18 replied with a small smile on her face. 18 ran off before 17 had a chance to say anything. 16 decided to take a rest so he didn't join in on the carnage, even if he weren't tired he wouldn't have joined in anyways. 18 started off by destroying a small mall that had around 20 people in it, giving her 20 points. 17 found the police station that held 16 people, he blew it up without giving anyone a chance to run.
"Sis is it me or does it seem like it's starting to get boring doing this all the time?" 17 asked his sister.
"Yeah." 18 replied with boredom showing in her tone.
"I'm going back to 16," 17 started before turning to 18, "wanna race?"
"Let's go!" 18 started off, almost catching 17 by surprise. 18 lost the race but was happy that she did have a little fun during the whole thing.
"16, wanna go and watch the animals?" 18 asked.
"Yes." 16 replied in the most ecstatic voice he could muster. 17 turned to his sister with a big smile, knowing that she was thinking of the same thing he was. They all flew off and watched the animals until sundown, then they stole another vehicle and took off to a good sleeping spot.
"17, 18, my sensors are reading a high power level not to far from here." 16 reported.
"They won't mess with us again." 17 replied before he fell asleep.
"Don't worry 16, we're fine." 18 reassured 16.
Meanwhile a few miles away from the androids' location
"AAAAH" a random woman cried out before stopping halfway.
"Sssshhhh" a strange voice said, creeping out all who were nearby to hear the voice and see the creature that the voice belonged to.
"It will be all over soon, if you don't squirm that is." the creature said before wiping out the entire city's population.