It's the Muppets series 7 with:

Kermit as Captain Abraham Smollet, commander of the pirate ship Hispaniola from Muppet Treasure Island. With Polly lobster, cutlass, sheath and magnetic hat.

Beauregard, the loveable but dim-witted janitor / stagehand from The Muppet Show. With mop, mop bucket, working mop wringer, push broom and magnetic hat

Frog Scout Robin - Kermit's little nephew in his classic Frog Scout uniform from the Debbie Harry episode of the Muppet Show. With campfire, backpack, travel trunk with stickers, trail mix, frog scout handbook and marshmallow roasting stick.

Johnny Fiama, the Italian lounge singer, who made his debut appearance (and gained huge popularity) on Muppets Tonight. With bar stool, microphone, vinyl record with record sleeve and photo frame with photo..