You can find Mawile in the first cave you come to on the island. You will need Flash, because the cave is dark.
In Pokemon Black and White, Mawile learns Iron Defense at level 41 and Iron Head at level 56
This is mawile
Yes, Oddish can learn flash.
Shroomish can learn flash.
all the Pokemon on dimmond that can learn flash can still learn flash in the platinum game too
No wurmple can not learn flash
get mawile on iron island
Mawile doesn't evolve at all.
Paris can learn cut and flash
it can only learn flash by using a tm
Zigzagoon cannot learn flash in ruby