Here is a WIP of My first Pretender attempt, Octopunch  
The bot can go into the shell (which was a big win for me).
I updated his design a bit by using a modern deep sea diving helm, and I made his crab a bit more Cybertronian by adding wheels instead of legs.
The Bot will be getting a new head, and I will be painting him up, as soon as the blackcoat dries.
Also, I'd like to thank DSN1014, Aprim, Shadeozero, and others who have attempted Pretenders before me, and have inspired me to try this. THANKS MATES!
Update on Page 5

 

Rockin custom! Very sweet. I'd love to see it all painted up G1 style just to complete the homage.

 

Epic, Transformer is epic!

 

*jaw drops* Wow...well done, sir, well done! Can't wait to see him painted...looks like you defintely captured the spirit of the original with a few twists of your own as well! If it's it not too exhausting to list, what were some of the parts you used....I recognize a Tribal Hulk figure of some kind, I think, plus the mini Y-Wing...makes me wonder if there's potential in any of those other small SWTFs I've been ignoring on the shelf.

 

Yeap, he's blackcoated atm... Thanks mate  

Thanks

Thanks mate!
Here's the part list:
The Shell:
The Helm and middle torso was from a Nat Geo deep-sea diving suit.
The Head, Arms, and the left & right sections of the torso are from Tribal Hulk(that the arms are attached... I bi-sected Hulk's torso down the middle)
The Legs are from a Spawn figure (they have no real posability as I need them to support the upper body's bulk).
The Tentacles are from a Marvel Selects Doc-Oc fig.
then A lot of Sculpting to add his armour.
The Bot:
Small scout-sized Y-wing Transformer that was miss-transformed with added wheels, and claws... and a new head to be added soon  

 

That's pretty cool.

 

thats pretty cool! nice way to get the little bot in the big bot

 

Looks great! Finally a use for those star wars crossovers.

 

I'm starting a slow clap over here. Magnificent! My only concern was having "rescue" on a Decepticon, but it sounds like you have that under control.

 

Fantastic! You have left me speechless otherwise.

 

Thanks mates!

Aye lol, and thanks

Aye, the "rescue" is gone lol... Thanks mate!

Here are a few shots of Octopunch with the blackcoat (while drying), I think it really begins to show off the details.
Enjoy:

 

The way you incorporated the small bot... GENIUS!

 

Freakin awesome..

 

That's amazing!

 

This is one of the most amazing things I have ever seen.

 

Nice!

 

So much win here.

 

This is gorgeous!
I love how well the upper body mass works with the pretender feature while still giving the figure such an incredible silhouette!

 

this is sick!!
some innovative use of molds coupled with crazy sculpting's going on here.
so many nice throwbacks to g1 too.
just missing a grill on his helmet's glass 

 

I have been looking for one of those dive suits for years.