The Skrulls are a technologically advanced race of reptilian humanoids, native to the destroyed planet Skrullos. They are notable for their shapeshifting abilities, which allow them to replicate other lifeforms seamlessly, and infiltrate planets without suspicion.
There are roughly one-sh*t billion tropes so PLEASE look through them before adding one. Otherwise add what you like. ADDITION: PLEASE read through the trope description provided before submitting something. It's not a huge deal but too often people submit characters that don't fit just because they misinterpreted the title...
