Who is the forgotten warrior from warrior cats?

Firestar, Bluestar, Hollyleaf, Lionblaze, Jayfeather, Bramblestar, Squirrelflight, Crowfeather, Graystripe, Tigerstar, Ravenpaw, Redtail, Stormtail, Silverstream, Feathertail, Sandstorm, Dustpelt, Thistleclaw, Snowfur, Pinestar, Mistystar, Stonefur, Oakheart, Crookedstar, Leopardstar, Raggedstar, Yellowfang, Spottedleaf, Leafpool, Alderpaw, Sparkpaw, Brokenstar, Stormfur, and much more!