@Dj0rel That's what I was thinking. Since when did Drive Knight know about Genos' search for the Mad Cyborg? Genos has never told anyone aside from Dr. Kuseno and Saitama.
There's definitely some truth to Drive Knight's story, with him telling about his hunt after Bofoi's machines (if we assume G5 of the Monster Association is an undercover act for DK), and G5 stealing Bofoi's dismantled robot during that arc. But then again, the best lies are those which are based on the truth after all. Much more believable and all that.
I guess it all comes down to Genos' discipline now, how much he's matured ever since his meeting with Saitama. Maybe he'll have enough presence of mind to call his doctor first (although I don't trust that one completely either, but at least more than Drive Knight. And I have the slight feeling that one is rather on the redemption path or sth.), or maybe he'll run into Saitama with his
"anti-bad hero name group" Hero Names Association (thanks, broadsword80! 😄 ) while on the way to Metal Knight.
Also, I don't think it's a coincidence how their hero names are so alike. Metal Knight and Drive Knight. Although, after looking it up, apparently Metal Knight's hero name is written in Katakana, and Drive Knight's in kanji? Unless that by itself is, yet again, a method to hide that fact. After all, Drive Knight did choose his own hero name. Metal Knight did so too in a way, but only as a request ...