What's this?

[DAMartin]

Help!

[Golden Puma]

I'd be surprised if it is, but I'm pretty sure it's not from a Joe line

[D'Compose]

Hmmm, I scoured the 2nd edition of Mark Bellomo's "The Ultimate Guide to G.I. Joe 1982-1994" and I can't see it...

[DAMartin]

Ok, we all agree that nobody knows what is it. Thank you, anyways.
Next is a sort of seat. Scale references: (really a repurposed un-caped ) and 25th Ann .

[The Kraken Wakes]

Its from the Joe Mobile COmmand Centre...

http://www.yojoe.com/vehicles/87/mobilecommandcenter/

[DAMartin]

Thank you, TKW! the Mobile Command Center images even let me know (and knowing is half the identification) that I had anothe piece of it (sadly, not the main body). Thanks!
Next are some Night Force pieces, with Falcon and Lifeline making the scale reference.

[Sundance]

something from a night force vehicle...

[The Kraken Wakes]

they are from the night force Killer W.H.A.L.E. or Night Striker...

http://www.yojoe.com/vehicles/88/nightstriker/

[DAMartin]

Thanks!
Nexs is a HUGE stand. I guess it's not GI Joe, but it came in the load, so I'm posting it just in case...
The scale references are :snakeeyes: and because the other "big stand" I have is the floor of the Arashikage Dojo.

[The Kraken Wakes]

That looks like the bit that makes the propellors whizz round / they attach to on the Night FOrce Whale, same vehicle as the other bits, it stands upright at the back...

Not 100% sure as I recognise the other side more but pretty sure...