There are various buildings and slimes (NPCs) in Boingburg. In the beginning, most of them are blocked off by iron balls, and the slimes have been kidnapped. To rescue a slime, you must find a blue chest in a level and Elasto Blast it. It will open and a slime will jump out. Take him/her back to town, and next time when you go to town s/he will be there. Also, when you have rescued as many slimes as labeled on a iron ball, they will be able to move it away, allowing you to access new areas.
Buildings
Your house
You return to your house after finishing each level. It is the building in the back and to the left in the main square. Inside it are:
Bo
Bo is your sister. She can be found upstairs.
Big Daddy
Big Daddy is your father. He can be found downstairs.
Mama Mia
Mama Mia is your mother, and she can be found downstairs.
Mr. Hooly
Mr. Hooly is Hooly's father. He sits on a couch downstairs.
Mrs. Hooly
Mrs. Hooly is Hooly's mother. She can be found downstairs.
Hooly
Hooly is your friend. He hangs around upstairs, with Bo.
The garage
The garage, designed to look like Ducktor Cid, lets you modify your tank and crew. There are four slimes inside:
Ducktor Cid
Ducktor Cid manages your ammo and crew. You can choose up to 30 pieces of ammunition to use in your tank, and up to 3 people in your crew. Each crew member has different abilities. You can also use baddies as crew members once you have a statue of him/her in the museum.
Slimechanic
Slimechanic upgrades the Schleiman's maximum HP. Each upgrade costs a small amount of money and sometimes a few items.
Flantenna
Flantenna lets you play multiplayer tank battles with DS Multi-Card Play and DS Download Play.
Poxie
Poxie doesn't do anything, and only talks about Mother Glooperior.
The shop
The shop, in the southwest corner of the main square, is run by Splodgy Dave. You can buy and sell goods here.
Splodgy Dave
Splodgy Dave runs the shop.
Blingaling
Blingaling sits at the table behind the counter.
Sliminator
Sliminator sits on a couch at the table behind the counter. He will sell you a canvas if you want.
Eggbard
Eggbard speaks in rhymes. He sits at the table behind the counter.
Clawdia
Clawdia sits at the table upstairs.
Soapia
Soapia stands by the table upstairs.
Weeny
Weeny sits at the table upstairs.
Lord Lard
Lord Lard stands by the table upstairs.
Frankenslime
Frankenslime hovers by the table upstairs. He speaks with a lisp.
The church
You can save your game here by talking to Mother Glooperior.
Mother Glooperior
Mother Glooperior lets you save your game, called an adventure log.
Namby
Namby plays the piano.
Bunny
Bunny jumps up and down on a stool.
Bubbilly
Bubbilly sits on a stool.
Goopid
Goopid sits on a stool.
Anjello
Anjello sits on a stool.
Goolia
Goolia sits on a stool.
Flabbot Flancisco
Flabbot Flancisco stands on the right side of the church.
Curate Rollo
Curate Rollo stands next to Flabbot Flancisco on the right side of the church. He offers to sell you Yggdrasil dew and leaves, which restore your health if you die.
Baron Blubba
Baron Blubba stands in the back of the church.