Love 
for your awesome work; good job my friend! Keep it up! 
Soldiersaurus - A gargantuan lizard that fires rockets from it's mouth with explosive tanker trucks stuck to his chest like grenades. His tail is tipped with a shovel. 
Ultra-Scout - The ol' Ultraman-styled character. Drinks som radioactive BONK! and transforms into a giant hero. Pyrodon - The Pyro is transformed into a huge molten titan that spews molten lava from one arm. His mask strangely doesn't rip and stays on his head. Democlops - The Demoman is transformed into a giant cyclops (substitute for a cliche king kong monster). Shoots explosive eyeballs from eyesocket. HeavyMeleeGolem - Heavy as a giant rock golem, created from ancient minerals from an abandoned Russian mine. E.N.G.I.E - The Engineer's robot hand freaks out, rapping tonnes of metal around him, transforming him into a colossal mech. This mech can dispense building-size dispensers and gargantuan turrets. He can also transform for a period of time. Mosniperpod - Well... Sniper + Mosquito + Spider. The spiders are huge in australia! He uses his needle-like nose to fire poisonous bullets, and his large eyes help him like a rifle does. He can also fly, but it reduces his focus of a good shot. The amorphous Spy - The spy is now a blob monster, which can shapeshift into disguises and "swallow" players whole instead of a backstab. Medicorah - The medic always wanted to study Merasmus' magical book, right? When he does, he is transformed into a giant, god-like mythical beast with magical powers capable of healing.
I just have SO MANY IDEAS! Me too! Originally Demoman was going to be Demokong, simply because he's erm... wild. I also thought he could throw explosive poo, but then I thought it was undignified. Another awesome concept I had was fusing his DNA with a plant from Scotland, such as a Thistle. The "spores" he'd fire would be prickled so they act like sticky bombs. In the end I thought a cyclops would work. He has a legitimate reason to be angry.
I'm sure they'll be awesome when you're finished. 
Sta.sh
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