Titanium Series

The Titanium Series is a Hasbro toyline of partially die-cast toys produced by their Galoob branch. Originally consisting entirely of Star Wars vehicles of various sizes, it has since expanded into Battlestar Galactica vehicles, Marvel Comics characters and Transformers.

Transformers Titaniums are produced in two size classes:
 * Robot Masters are 3-inch, non-transformable, die-cast figurines of Transformers characters from various past and present toy lines.
 * Cybertron Heroes are 6-inch, transformable, partially die-cast toys, representing both pre-existing toy designs as well as all-new models by Don Figueroa.

It is worth noting that since the Titaniums are developed by a separate branch of Hasbro from the normal Transformers team (who only has some input into character choices and looks), they do not take away "slots" from other Transformers lines. They are also not engineered or "mech-designed" by Takara.

They are also not actually made of titanium.

Cancellation
In July of 2007, Hasbro announced that no new Titanium figures would be produced, and that the line would end after the upcoming release of figures already completed: Primal Prime, Soundblaster, Skywarp, War Within Grimlock, and War Within Prowl. But as of six months later, none of those figures had been released, and Hasbro announced that they no longer had any plans to mass-produce or release them.

Several other 6" figures were canceled at much earlier stages in development: Hasbro showed unfinished prototypes of Arcee, Cosmos, Shockwave and War Within Bumblebee (with an additional Cliffjumper head), purely for informational purposes, as they were very clear that they no longer had plans to complete development on those figures.  However, the Transformers Collectors Club roundtable has suggested there "may still be hope" for these figures to be produced in some form as part of other toylines.

3" Robot Masters

 * The Ark (Autobot Shuttle)
 * Movie Blackout
 * Generation 1 Bumblebee
 * Generation 1 Bumblebee (Super metal finish; packaged with Optimus Prime)
 * Movie Bumblebee ('74 Camaro body)
 * Generation 1 Galvatron
 * Generation 1 Grimlock
 * Movie Ironhide
 * Alternators Jazz
 * Movie Jazz
 * Beast Wars Megatron (Ultra body)
 * Cybertron Megatron
 * Movie Megatron
 * Optimus Primal (Ultra body)
 * Generation 1 Optimus Prime
 * Generation 1 Optimus Prime (battle-damaged redeco)
 * Generation 1 Optimus Prime (super metal finish; packaged with Bumblebee)
 * The War Within Optimus Prime
 * Movie Optimus Prime
 * Predaking
 * Generation 1 Rodimus
 * Energon Scorponok
 * Alternators Sideswipe
 * Alternators Smokescreen
 * Generation 1 Soundwave
 * Generation 1 Starscream
 * Generation 1 Thundercracker (redeco of Starscream)
 * Unicron (holding a moon of Cybertron)

Mainstream Releases
Wave 1
 * Transformers/G.I. Joe/Generation 2 Megatron (re-imagined design)
 * The War Within Optimus Prime

Wave 2
 * The War Within Jetfire
 * The War Within Thundercracker

Wave 3
 * Optimal Optimus
 * Generation 1 Scourge

Wave 4
 * Generation 1 Rodimus Prime
 * Generation 1 Soundwave with Laserbeak

Wave 5
 * Beast Machines Cheetor
 * "War Within" Fallen

Wave 6
 * Robots in Disguise Optimus Prime
 * The War Within Starscream (redeco of Thundercracker)

Wave 7
 * The War Within Megatron
 * Generation 1 Ultra Magnus

Wave 8
 * The War Within Sunstorm (redeco of Thundercracker)
 * The War Within Ultra Magnus (redeco of Optimus Prime)

Exclusives

 * Toys R Us exclusive 2-pack of The War Within Megatron and Optimus Prime with exclusive The War Within #1 variant-cover comic.


 * San Diego Comic-Con exclusive Generation 1 Menasor (redeco of Rodimus Prime)

Pictured

 * Generation 1 Cliffjumper (redeco of Bumblebee)
 * The War Within Nemesis Prime (redeco of The War Within Optimus Prime)
 * Alternators Sunstreaker (redeco of Sideswipe)
 * Generation 1 Soundwave (new mold)

Solicited only

 * War Within Megatron (probably a new mold)
 * Jetfire (probably a new mold, version unknown)
 * Soundblaster (probably a redeco of Soundwave)
 * Skywarp (probably a redeco of Starscream)
 * Silverstreak (probably a redeco of Alternators Smokescreen)
 * Black RODIMUS (probably a redeco of Rodimus)
 * Shockwave (probably a new mold)
 * Ultra Magnus (unknown; could have been an Optimus Prime redeco OR a new mold)
 * Grimlock (unknown; could have been a G2 themed repaint of original mold, or a new mold entirely)

Solicited/Pictured

 * The War Within Grimlock (new mold)
 * Primal Prime (redeco of Optimal Optimus)
 * The War Within Prowl (new mold)
 * The War Within Skywarp (redeco of The War Within Thundercracker)
 * Soundblaster with Ravage (redeco of Soundwave with new-mold Ravage)

Resin hardcopies only

 * Arcee
 * The War Within Bumblebee (with an additional Cliffjumper head, perhaps a planned retool?)
 * Cosmos
 * Shockwave