River City Girls/Ocean Heights

The effect in parenthesis only applies the first time you consume the item.

Dojo
Shopkeeper: Billy Lee (Double Dragon)

It has the same moves as the Crosstown Dojo.

Lucky Penne
Shopkeeper: Martha (The Combatribes)

Pop's Sauna
Its location isn't marked on the map, but it's in the Fancy Hotel Lobby.