These look like GI Joe accessories but i'm not sure.
Not sure who these figures are. I Know purple one looks like MOTU, but I can't find who it is.

Thanks for the help.

3. GI JOE Swamp Masher missile
5. Cobra IMP mine
6. GI JOE Falcon
7. GI JOE Hardball grenade launcher
The figures are Defenders of the Planets
Action Figure Archive - Defenders of the Planets by Sparkle
They outright bootlegged Masters of the Universe waist and legs, maybe the chest, too.

1: 1985 Defenders Of The Planets Strongarm Figure
2: 1985 Defenders Of The Planets Canis Major Figure
5: 1988 G.I. Joe Cobra IMP Land Mine
6: 1987 G.I. Joe Lt. Falcon Backpack (Missing Antenna & Knife)
7: 1988 G1 Transformers Nautilator Tripod Rifle
8: 1989 G.I. Joe Scoop Backpack
9: 1988 G.I. Joe Hardball Grenade Launcher
10: 1988 G1 Transformers Scalor Dual Crustation Rifle

Thank you for all the help!

Purple guy from MOTU is called Spikor, I think.

You are correct. He is Spikor. I just didn't know who the guy next to him was. Thanks.