### Clue: Right-winger in Barking breaking valuable material is monstrous type (4)
### Answer: OGRE 
 ### Explanation: Definition: monstrous type
 **Last letter of**(Right-winger in, in an across clue) "Barking" **contained in**(breaking) ORE(valuable material from which even more valuable substances are extracted).
An atypical monstrous type: