I used KingoRoot to root an HP 8 G2 tablet. This is the first time I've used the software, and the first device I've needed to root. A few apps got installed in the root process: Kingo ROOT, SuperUser and SuperBattery. The first was visible in the rooting process, and the second seems to have a genuine purpose even if it wasn't invited, but the third looked like straight bloatware so I uninstalled it. However, I still had the following screen appear when turning on the screen, which I don't remember ever seeing before the root. 

Does anyone know where it comes from?