Shade

"'Come on, dont you want to see your sister?' Shade said trying to kill Paleflame, Swanpaw's sister."

Past Arc.
Shade never formally appears in the past arc.

Dark Forest Arc.
Shade first appears to Leafstorm, his ex-mate, trying to take his kits. As a Dark Forest Spirit, he enjoys tormenting cats in dreams. Other cats he worked with were Clawtail and Shadowstreak.