Originally Posted by Boy Blunder

Common fan term for the body molds that get reused throughout the line. Some of the ones you'll see mentioned a lot are the 'Bucky Cap' and 'Grim Reaper' bucks/molds, since those are the most common male body-types.

'Bucky Cap' is the standard heroic build, used on your average hero/villain. Examples include the aforementioned (and shown earlier) Bucky Barnes Captain America; Mandroid-series Baron Zemo; Ultron-series Giant Man; Hobgoblin-series Daredevil; Warlock-series Cyclops; and many, many more.
'Grim Reaper' is the slightly bulkier heroic build, bigger than the Bucky Cap body, but not as big as, say, Tiger Shark or Captain Britain. While the Ultron-series Grim Reaper was not necessarily the first figure to use the body-type, a lot of people ID it that way as shorthand. Other figures include the Abomination-series Wonder Man; Walgreens-exclusive Punisher; and quite a few others (these are all off the top of my head, mind).

Originally Posted by Archangel

Found the X-Men wave at my Walgreens, no Cyclops or Colossus in sight.

Originally Posted by Trivial Psychic

Here we go again guys. You know that once images like these start to hit the net, it usually isn't long before they start to hit shelves. Get ready...