"A scientific super electromagnetic cannon T" has aired 4 episodes, according to the development of the plot, people who have not seen the original manga, it is likely that the bee eater is a bad person. In fact, this is not to blame others for suspecting, the bee-eating behavior is indeed too suspicious. In the first episode, the bee eater fu prays to provoke the cannon sister and has to do something.

If it is only the bee eater who provokes the gun sister, at the end of the first episode, the bee eater Fu Qi meets with a man and mentions the matter of the cannon sister's clone Misaka sister. In view of the performance of the bee-eating exercise prayer before, after watching her want to know about Misaka's sister, it has to be suspected that there is any conspiracy between the bee-eating prayer and pray.
The anime ED also does things, deliberately creating an atmosphere of gun sister and bee eater battle. In the third episode, Misaka-mei is overwhelmed by nano-mechanical drugs, and the bee-eating and the man who inquired about the news before appear. Combined with the previous dialogue, in such a scene, it is more and more like the bee eater is a villain.
In the fourth episode, the bee eater uses the ability of psychological control to manipulate others, transports and hides Misaka Sister, and also monitors Gun Sister. More importantly, the bee eater tampered with the memories of Kuroko, Hatsuharu, and Tear Ye, deleting their memories of Gun Sister, who was not only monitored, but even lost friends.
Hiding Misaka-mei and tampering with other people's memories has to make people think that the bee eater has a conspiracy against Gunjie. However, in fact, the bee eater is not a villain, and the reason why she inquired about Misaka's information and hid Misaka's sister was to protect Misaka-mei, because the bee-eater and a clone of Gun sister had a friendship.
Then, why didn't the bee-eater who wanted to protect Misaka Sister tell the truth and join hands with Gun Sister? One is that the bee eater tampers with some people's memories, so that the real villain will target the gun sister, let the cannon sister attract fire, and then act secretly. Tampering with the memories of the three Kuroko is both to protect them and to restrain the gun sisters.
The more important reason is that the bee eater does not believe in the cannon sister. Bees eaters don't trust others, as long as they are helpers, bees will first spy on their heads. However, the cannon sister has an electromagnetic barrier, and the bee eater cannot spy on the cannon sister at all, so the bee eater cannot trust the cannon sister and does not know what the cannon sister will do.
Of course, in the end, the cannon sister and the bee eater still joined forces, and although the two still hated each other, the relationship was still a little closer.