The name given by the audience to a black cat encountered in Misaka No. 10032, referred to as "Dog Brother", has appeared many times.
When Kamijou Touma met Misaka sister, he mistook her for Misaka Mikoto and shouted "bi_______________libili", which was understood by her sister as the name of the cat.
After Kamijou asked Misaka No. 10032 to name the cat, Misaka hoped that the cat would be called "Dog".
After being criticized for being too immoral, he changed his name to "Tokugawa Ieyasu".
The name was changed again to "Schr?dinger" because it was too serious.
Kamijo was quite skeptical about whether it was appropriate to name the cat Schr?dinger, and finally decided to keep the name tentative.