The Mudwing with splotches on him is mah boi Toad. He doesn't have brothers and sisters because they all were captured by Queen Scarlet and killed by Peril in battle. Toad himself was still a hatchling when his siblings got killed, so growing up he had no idea he had dead siblings(He never knew they existed because Newt decided not to tell him about them), and instead grew up being taken care of a kind female Mudwing called Newt, who Toad counted as his sister. Newt's siblings were at war at that time and never came back, so she also didn't have siblings either.
The "Something Coming" is just a sneak peak on the prophecy I made, and that eye is the eye of the villian, who normally has black eyes with a white pupils that have green flames drifting out of them.