Good day to all u good and knowledgeable people from TFW2005, I would like to seek your help by giving me advices and opinions on who are the rivalries/arch-enemies/nemesis between the transformers, as I'll be accumulating my collection based on 1 bot vs 1 con. I know this this a weird way of collecting, but to each his own, this is my collecting style. Some of the pairings are also done due to the toys sharing same mold or them having the same role. Below is the list I've compiled so far: Optimus vs Megatron Bumblebee vs Starscream Rodimus vs Galvatron Magnus vs Cyclonus Blaster vs Soundwave Ironhide vs Shockwave Kup vs Scourge Ratchet vs ? Prowl vs Barricade Hound vs ? Jazz vs ? Wheeljack vs Exhaust Perceptor vs Magnificus Drift vs Axor Devcon vs Lockdown Mirage vs Impactor Topspin vs Runabout Twin Twist vs Runamuck Chromedome vs Weirdwolf Hardhead vs Skullcruncher Highbrow vs Mindwipe Brainstorm vs ? Hosehead vs Fangry Nightbeat vs Horri-bull Siren vs Squeezeplay Pointblank vs Slugslinger Crosshairs vs Misfire Sureshot vs Triggerhappy Landfill vs Needlenose Quickmix vs Quake Scoop vs Spinister Springer vs Blitzwing Broadside vs Astrotrain Sandstorm vs Octane Quickswitch vs Sixshot Superion vs Menasor Defensor vs Bruticus Computron vs Abominus Volcanicus vs Predaking Raiden vs Devastator Maximus vs Scorponok Metroplex vs Trypticon Wreck-Gar vs ? Elita-One vs Blackarachnia Windblade vs Slipstream Chromia vs ? Arcee vs ? The greatest challenge at the moment is the pairing between the headmasters. Which bot should I remove or is there a con I can add in to make it 4 v 4? Feel free to comment and feedback. Thanks for all your inputs!