Mutants

1.Absalom?

2.Madin

3.Battering Ram

4.Chicken Wings

5.Hump

6.Abyss

7.Living Monolith

8.La Nuit

9.Adam X

10.Magneto

11.Feral

12.Karasu

13.Joe Bugs

14.Negasonic Teenage Warhead

15.Oya?

16.Onyxx

17.Skids

18.Hijack?

19.Metalhead

20.?

21.Harry Leland

22.Ever

23.Smart Alec +

24.Silver Samurai

25.Shark-Girl

26.Cyclops

27.Orphan

28.Loa

29.Jazz

30.Revelation

31.Mentallo

32.Obsidian

33.Phat

34.Mysterious Fan Boy

35.Madison Jeffries

36.Sluk

37.Wolf Cub

38.Omerta?

39.Projector

40.Prof X (House of X)

41.Radius

42.Aurora

43.Javitz

44.Pixie

45.Skin

46.Quill

47.Leech

48.Blob

49.Paradigm

50.Persuasion

51.Layla Miller

52.Lifeguard

53.Erg

54.Healer

55.?

56.Vanguard

57.Aries

58.Scorpion Boy

59.Fabian Cortez

60.Stitch

61.Hellion

62.Scanner

63.Prodigy

64.Big Bertha

65.Glob Herman

66.Caliban

67.Blow-Hard

68.Murmur

69.Collective Man

70.Flashback's Duplicate

71.Flashback

72.Banshee

73.Broo

74.Bloke

75.Micromax

76.Puck (Zuzha Yu)? (coloring issue)

77.Gateway

78.Darwin?

79.Storm

80.Polaris

81.Firefist

82.Dr. Swaine

83.Lacuna

84.Shadow King (Amahl Farouk)

85.Shadowcat

86.Emplate

87.Transonic

88.Multiple Man

89.Ricochet

90.Eye-Boy

91.Franklin Richards

92.Vance Astrovik/Justice

93.Sunder

94.Frenzy

95.Thunderbird (John Proudstar)

96.Maggot

97.Iceman

98.Pyro

99.Peepers

100.Namor

101.Bishop

102.Scaleface

103.Bevatron

104.Plazm

105.Vindaloo?

106.Mandrill

107.Tri-Joey +

108.Hemingway

109.Darkstar

110.Sunfire

110.Randall

112.Vulcan

113.Magma

114.Hazard

115.Shattertar

116.Empath?

117.Threnody

118.Surge

119.Famine

120.Pestilence

121.Dead Girl

122.Fever Pitch

123.Ch’vayre

124.Warpath

125.Thornn

126.Bedlam

127.Neophyte

128.Stepford Cuckoos

129.Forge

130Exodus

131.Evangeline Whedon

132.?

133.Meltdown (probably, can't find reference for exact outfit)

134.Rictor

135.Daken

136.Sunpyre

137.Zeitgeist

138.Spike

139.Goldballs/Egg

140.Omega Red

141.Mother Inferior

142.Mesmero?

143.Azazel

144.Snowbird +

145.Morph

146.M

147.Lexi?

148.El Guapo

149.Succubus

150.Bling!

151.Jubilee

152.?

153.Ursa Major

154.Dust

155.Havok

156.Joseph, Magneto-clone

157.Mant

158.Tempus

159.Whiz Kid

160.Bulk or Slab

161.Rockslide

162.Beautiful Dreamer

163.Genesis

164.Xorn

165.Gambit

166.Hope Summers

167.Toad

168.Apocalypse

169.Sabretooth

170.Sebastian Shaw

171.Changeling

172.Warlock

173.?

174.Rogue

176.Match?

177.Maverick

178.Meld?

179.Mastermind

180.Whirlwind

181.No-Girl

182.Avalanche

183.?

184.MeMe

185.Marrow

186.?

187.Vivisector

188.Damian Tryp

189.Vulpine

190.?

191.Wither?

192.Monte

193.Timeslip

194.Wallflower

195.Fantomex

196.Tommy

197.Johnny Dee

198.Alchemy

199.Irving

200.Velocidad

201.Lightning Bug

202.The Fittest

203.Outlaw

204.?

205.Darkling

206.Annalee

207.Tether

208.Coda

209.Brute

210.Auric (weird coloring, see 222)

211.Smoke

212.Tempo

213.Lightbright

214.Riptide

215.Feedback

216.Siena Blaze

217.Tyler Dayspring

218.Sumo

219.Ziggy Karst

220.Mole

221.Unuscione

222.Silver (weird coloring, see 210)

223.Azimuth

224.Mercury

225.Cassandra Nova +

226.Cipher

227.Firestar

228.Stacy X

229.Esme Cuckoo

230.Sprite

231.Tito Bohusk

232.Marked Man?

233.Sabra

234.Loss

235.Bliss

256.Skinless Man

237.Sanjar Javeed/Death

238.Sage

239.Viper +

240.Cyber

241.Mondo

242.Coach?

243.Jennifer Ransome

244.Mortis

245.Andrea von Strucker

246.Andreas von Strucker

247.Callisto

248.Armor

249.Mist Mistress

250.?

251.Trance (255)'s Astral Form

252.Anarchist

253.Black Tom Cassidy?

254.Chamber

255.Trance

256.Kid Omega

257.Amp

258.Beak

259.Ernst or Qwerty

260.Choir

261.Delphi

262.Zeek?

263.Magik

264.Sunspot

265.Scalphunter

266.Selene

267.Ape

268.Wolverine

269.Proteus

270Gin Genie

271.Washout

272.Doorman

273.Wolfsbane

274.Portal

275.Arlo Summers

276.Beast

277.Diamond Lil

278.Hindsight

279.Catseye

280.Wild Child

281.Cypher

282.Jean Grey

283.Domino

284.Michael Pointer?

285.Tarot

286.Karma

287.Thumbelina

288.Primal

289.Dani Moonstar

290.Siryn

291.Angel Salvadore

292.Sojobo?

293.Anole

294.?

295.Synch

296.Mystique

297.Colossus

298.Squidface +

299.Phantazia

300.?

301.Flatman

302.Legion

303.Arclight

304.?

305.?

306.Prism

307.Masque

308.Strong Guy

309.Cecilia Reyes

310.Amelia Voght

311.Destiny

312.Stinger

313.Luca Aldine

314.Blockbuster

315.Nature Girl

316.Harpoon

317.Mr. M?

318.Samson

319.Lady Mastermind

320.Cannonball

321.Typhoid Mary

322,Sycamore

323.Dragoness (mask usually has a visor but it is occasionally drawn with separate eyes, shape is distinctive)

324.Boost

325.Mammomax

326.Grimlock

327.Highbrow (of Manikin)

328.Apeman (of Manikin)

329.Blindfold

330.Chris Bradley

331.Husk

332.Tanya Trask

333.Vessel

334.Saint Anna

335.Manikin

336.Carver

337.Berzerker

338.Greymalkin

339.Locus

340.Pete Wisdom (probably, process of elimination)

341.Skein (aka Gypsy Moth)

342.?

343.Mikhail Rasputin

344.Venus Dee Milo

345.Empyrean

346.Gentle

347.Cable

348.Gargouille

349.Mindblast

350.Northstar

351.Lorelei Travers

352.Nightcrawler

353.Moira MacTaggart? (glasses shape match) Or possibly Creep/Marisol Guerra (glasses and hairstyle match)

354.Vanisher

355.D'Gard

356.Microbe

357.Mr. Sinister

358.Nekra? (Based on widow's peak and possible topknot, should be chalk white)

359.Icarus

360.Tar Baby

361.Psylocke/Kwannon

362.Petra

363.Kiden Nixon (clothes and pacifier)

364.Litterbug

365.Jo

366.Rachel Summers

367Thunderbird (Neil Shaara)

368.Missy

369.U-Go Girl

370.Brain Cell?

371.Sack?

372.X-23

373.Membrain

374.Zero

375.Maw

376.Gamesmaster

377.Ent

378.Gaia

379.Shinobi Shaw?

380.Dazzler

381.?

382.Emma Frost

383.Crosta

384.Blink

385.Elixir

386.Indra

387.Black Box

388.Dr Nemesis

389.La Lunatica (2099)

390.Corkscrew

391.Lila Cheney

392.Kylun

393Captain Britain/Betsy Braddock

394.Archangel