So, you are here because you are interested in The Quest. The Quest is quite simply my goal to collect every black Optimus Prime or Convoy toy from the main Transformers line. What that means is I am not including shit like Botshots, Kreo etc.
Here is the list I have found of existing Blacktimus' so far:
Black Lio Convoy
Black Big Convoy
Scourge / Car Robots Black Convoy - Obtained!
Nucleon Quest (PM Prime)
Alternators Nemesis Prime - Obtained!
Classics Nemesis Prime
Arms Micron Nemesis Prime
Go! (Beast Hunters) Nemesis Prime - Obtained!
Tokyo toy show Dark Side Prime - Obtained!
Armada Nemesis Prime
MP Black Convoy - Obtained!
Robot Masters Black Convoy - Obtained!
Robot Masters Black Lio Convoy
Robot Masters Black Beast Convoy
eHobby THS Black Convoy
Grand Scourge (Model kit) - Obtained!
TFCC Scourge - Obtained!
Movie Prime (Amazon JP - ROTF)
THS Black Convoy - G2 version
Dark Guard Prime
DOTM Nightwatch Prime
EZ Darkside Prime