Fantastic Four #15

 "Good grief! Another power-mad genius for us to contend with!"

The quote above says it all- the Mad Thinker is not exactly the greatest villain of all time, just being another arrogant clever villain, this time the conceit being that he plans things to the second, until Reed defeats him with the "x-factor", or an unpredicted event which the Thinker somehow failed to foresee for reasons that aren't entirely clear... but at least Mr Lumpkin gets another mention! 

Still, it's a surprise that the Thinker becomes such a fixture for the FF, being so dull, and nowhere near as cool as his Awesome Android, overpowered though it seems here. There are some cool moments though, such as our first real experience of Ben's rivalry with the Yancy Street Gang, and Reed again using that gun thingy from issue #1 to summon the team- I think a fixture of these early days? It's also nice to see a bit of wry irony in Stan's captions, describing the Thing as "as lovable and shy as ever".

Interestingly, even as late as this issue the FF are as much crimefighters as they are explorers, with the Thinker seen very much as a gangland figure. It'll be interesting to see that change. Overall, though, a decent enough issue but nothing special. The FF need a far bigger canvas than this sort of stuff.