Since people have been interested in an explanation and I found a joke panel where Asana had been talking with an alien. This is pure bullshit and I had so much fun making this up.
Disclaimer: I still don't own Assassination Classroom.
Snicz felt miffed at Asano's refusal to let him help defeat his enemy against whom he had requested help for.
The alien didn't really understand why the boy wouldn't take the easy solution and simply evaporate them. It was much simpler than planning for a little warfare, that even had a clear outcome.
Asano would win. Of course, someone, who had attracted the attention of someone from a different planet, was bound to be strong and special. Snicz didn't doubt that Asano wouldn't win.
He wasn't great at reading human expressions, but he could clearly see the outright rejection in the young human's face when he had offered his help.
Only after an extensive amount of research the alien from Illuka had found out that it wasn't actually acceptable to kill the enemy.
Imagine his surprise when he saw how the boy was knocked down from his rather eccentric throne.
(Snicz had hacked one of the satellites orbiting around the Earth. It was a child's play. Earth was just so primitive in their technology.)
At first, he had thought, "Serves him right for not accepting my help." But quickly after that he had seen the treatment Asano had received after his loss and the extreme way his father was trying to get his point across.
(Snicz culture liked to fight against other planets, but they didn't like to harm their own kind. It was counterproductive to have too little soldiers when they were fighting and take even more out of commission. Asano's enemy had been of his own kind, but he had only tried to spar against them. No death and such.)
So, the alien thought about a way to make Asano's life a bit easier and a solution for him to mend the broken (or non-existent) relationship between the two Asano family members.
Their often-used method of trying to see the perspective of the other by living his life for a certain time frame seemed to be well suited for this, but Snicz had at least enough understanding of their character and current interaction to see that it wouldn't change anything.
When Asano's father had an actual stand-off against class E, who Asano had fought against, Snicz started to look into the matter of that group.
Class E seemed to be the current focus in the everlasting fight of the two Asanos, which Snicz found intriguing.
They were tightly knit, trained and out for their teacher's blood, who seemed to be an alien, too. At least at the first glance. The yellow creature was a human.
(With the ability to do about everything possible with speed and mold-able molecule structure. Snicz wanted to look into this, but refrained. He had another problem to focus on.)
The one, who had the strongest connection to Asano, was a red-haired boy, who seemed to be in an academic rivalry with the strawberry-blond.
May as well as try this.
Snicz "borrowed" one of the personality switch pistols, which just copied and transferred neuron patterns into other bodies. He made sure to adjust the gadget to the human body. He surely didn't want to kill his friend or the other boy.
They would be either able to switch after they had started to pick on the discrepancies they had against each other or themselves or would automatically reverse after a week of time. It depended on them.
About two months of work went into his little side project. It actually took so much of his attention, that he had to give the command for his fleet temporarily to his vice-captain.
(Gunbtz, his second-in-command, was actually used to his more enthusiastic side of pitching into other people's business. He was a reliable second, as well as an excellent cook. Any kind of ingredient was made into a tasty meal by him.)
A day after a successful switch between two other humans (two toddlers, he changed them right back) he was ready to help his friend. Of course, Asano would not appreciate this at first, but he wouldn't know it was him.
Snicz teleported from one house to the other (both having too much space and silence inside them for someone, who was always together with his people) and copied their personalities.
He made a game out of it to see if anyone would notice him creeping inside their houses. Maybe he would go to that amusing place again they called Area 51.
Nothing like that happened, but Snicz was satisfied to see the hadn't noticed him.
Now it was time to lean back and enjoy the show.
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