Sketch of Moonlight and Squirrelflight for size comparison!
Juniperclaw! He is Dawnpelt's and Crowfrost's son, sibling to Sleekwhisker and Strikestone. He is part of the unruly apprentices in the Vision of Shadows arc, and leaves with Sleekpaw and Needlepaw to join the Kin early. He does a lot of stuff in the arc, but rejoins Shadowclan and then Skyclan, and notably becomes Tigerstar's Deputy when the leader returns and sepparates Shadowclan out again. Juniper is really excited to see Sleekwhisker when she returns with Yarrowleaf, and helps the two she cats when they are rejected by Leafstar by keeping them hidden in the old Shadowclan camp and hunting for them. He helps plan the attacks on Skyclan to try to drive them out and get revenge, and is later revealed to have poisoned the clan's fresh kill with death berry seeds nearly killing cats. He is removed from his position and put under guard, but escapes to find Shadowkit when he goes missing and the clan is distracted. he gives his life to save Shadowkit. He is characterized in my mind as an extremist with a heart of gold, and its no wonder the fandom likes him so much.
he later is part of the cats overshadowed by Ashfur, and once the imposter is defeated he tries to ascend to Starclan but is rejected. as a compromise he offers to guard the bridge between the afterlives, to prevent another cat from taking advantage of it in the same way again.
Sparklecat Squirrelflight?
popular demand!!
A king stays dedicated even when his queen'S secondhand embarrassment is out here constructing whole apartments with her toes.
Kinkfur! She Is Needletail's other Grandma, but you wouldn't realize that from reading the books haha. She is first named in the allegiances of Eclipse, as a warrior. In the Omen of the Stars she has a litter of kits, Mistcloud, Sparrowtail, and Dewkit, who attempt to play with Ivypool when she is captured and held in Shadowclan during Night Whispers. In the last battle she helps Littlecloud take care of the wounded during the battle. Her lengthiest appearances happen in Thunder and Shadow, and while she has a bit of the 'stock shadowclan' rude and proud attitude she also tends to be a bit softer and more trusting than other cats, choosing to believe and trust Violetpaw to be loyal because she was unwilling to betray the Kin. She falls ill with Yellowcough and perishes, prompting the medicine cats to defy Onestar and gather the lungwort anyway at their next gathering. Crowfrost remembers her at her vigil as having been "loyal to Shadowclan for many moons, and she was loyal and kind to the end." Other fun facts, as of writing this she is the only Shadowclan cat who's name begins with K.
Hopwhisker! She is the daughter of Yarrowleaf and Nettle, the Kin cat turned rogue who returned in the back half of A Vision of Shadows to try to steal back his kits. She is mentored by Whorlpelt. She is pretty much Allegiances only in all of Broken Code, but in the Starless Clan arc she gets a few appearances on patrols and such. She is mentioned by Sunbeam to have dared Lightleap to go into Riverclan territory alone, for which Lightleap was punished by Tigerstar to do apprentice duties for a moon. She is on a patrol with Sunbeam and Lightleap when she cuts her foot on twoleg trash near the boarder with Riverclan, and they decide to ask Mothwing for help because she is closer but the medicine cat won't let them enter camp. She is a decent fighter, and holds her own during the coup Berryheart leads with Riverclan against Shadowclan, notably being one of the few cats still battle ready at the end of the fight.