Ok-Boomer

Ok-Boomer is a small robot resembling an Alexa that attacked Mesatown and the CSP Foundation. He originally appeared after a Mesatown family ordered him off Amazon, harmless, simply with the annoying personality of a Boomer. After the machine got considerably more dangerous, he shot the mother, nearly killing her, and threw the son out the window. The Foundation was contacted, and they took matters into their own hands.

In captivity
While imprisoned, Ok-Boomer developed his full evil personality. The Foundation discovered he could control and bring life to other pieces of electronic equipment, all in the same hive mind. He created a robot called Boomer TV, an extension of him, and escaped confinement. Shortly afterward, he created a massive, flayed robot army, ripped apart his trusty TV sidekick (who was already shot by the Foundation earlier), and made a humongous scrap robot suit and planned world domination by taking over all machinery. CSP halted this, and destroyed his entire army. Ok-Boomer is now locked in a jewelry box, as a single battery.

Personality
Ok-Boomer, being an evil boomer, was not very pleasant. He acted exactly like a stereotypical a-hole boomer: redundant, ignorant, all "Back in my day...". However, he slowly lost this attitude during his attack, and gradually became more evil than boomer.

Scary.
After becoming evil. his personality changed once more. He then became evil, sadistic, and more surreal, demented, and demeaning, having to resort to beat-up scrap. Without proper speakers, he simply sounded like a million echoey voices talking at once, like your standard demon. He became incredibly creepy, and CSP officials still say they somehow hear Boomer talking through the battery in this same voice.

Things to note
In a bonus panel, the father of the aforementioned family saw and halted another person buying the Ok-Boomer in a store. This means that there is more than one Ok-Boomer out there. However, chances are that this specific Ok-Boomer was the only evil one.

Since batteries do not have speakers, even the lamest ones, it would be physically impossible for Ok-Boomer to talk through it. There is a chance he has paranormal abilities.

Role
Ok-Boomer is actually the other main antagonist in Johanis opposed to Mind Guy: the difference being Boomer lost.