The Monk class seems to have been replaced by the Light Mage class in Fire Emblem: Radiant Dawn. The only Light Mage in the game is Micaiah. This can not be completely known though as Micaiah is one of the main characters of Radiant Dawn and most main characters boast a unique class.
Monks, like Priests, can promote to Bishops with the ability to use Staves as well as Light Magic, as well to learn the skill Slayer, in The Sacred Stones. In Fire Emblem: The Sacred Stones, they can promote to Sage, which lets them use Staves, Anima Magic and Light Magic.Their critical hit shows them holding both hands at their heart instead of one.
In the GBA games, the monk's generic enemy portrait is shared with that of priests and clerics. The portrait shows a person in white robes carrying a staff, which is contradictory because the monk cannot use staves (it is even specifically pointed in their description)
|First Tier Classes|
|Lord - Ranger - Light Mage - Tactician - Prince - Princess - Cavalier - Axe Knight - Arch Knight - Lance Knight - Sword Knight - Free Knight - Soldier - Fighter - Brigand - Pirate - Archer - Hunter - Bow Fighter - Nomad - Pegasus Rider - Pegasus Knight - Wyvern Rider - Mercenary - Myrmidon - Knight - Priest - Cleric - Monk - Troubadour - Mage - Wind Mage - Fire Mage - Thunder Mage - Lopto Mage - Dark Mage - Shaman - Thief - Dancer - Bard - Transporter (Tent) - Bow Hero - Lady Knight - Axe Knight (Tear Ring Saga) - Spear Knight - Leda Princess - Wood Shooter|
|Second Tier Classes|
|Knight Lord - Great Lord - Blade Lord - Light Sage - Grandmaster - Master Knight - Paladin - Bow Paladin - Lance Paladin - Blade Paladin - Bow Knight - Forrest Knight - Great Knight - Duke Knight - Halberdier - Warrior - Berserker - Sniper - Horseman - Nomadic Trooper - Falcon Knight - Dark Flier - Wyvern Lord - Wyvern Knight - Griffon Rider - Hero - Swordmaster - General - Axe General - Sword General - Lance General - Bishop - High Priest - War Monk - War Cleric - Valkyrie - Sage - Wind Sage - Fire Sage - Thunder Sage - Mage Fighter - Mage Knight - Dark Knight - Sorcerer - Druid - Summoner - Dark Sage - Thief Fighter - Assassin - Rogue - Trickster - Transporter (Wagon) - Hide Hunter - Arrow Knight - Sergeant - Iron Knight - Bow Master|
|Third Tier Classes|
|Vanguard - Light Priestess - Gold Knight - Silver Knight - Sentinel - Reaver - Marksman - Seraph Knight - Dragonlord - Dread Fighter - Trueblade - Baron - Marshall - Saint - Archsage - Whisper|
|Villager - Journeyman - Recruit - Pupil - Probation Flier (Unused)|
|Earth Dragon - Dark Dragon - Grima - Draco Zombie - White Dragon - Revenant - Entombed - Bonewalker - Lich - Wight - Gargoyle - Balrog - Deathgoyle - Mogall - Arch Mogall - Bael - Elder Bael - Tarvos - Maelduin - Mauthe Doog - Gwyllgi - Gorgon Egg - Gorgon - Cyclops - Dark God - Demon King - Order Incarnate - Emperor - Dark Prince - King - Dark Druid - Necromancer - Black Knight - King Daein - Barbarian - Corsair - Exorcist - Witch - Dark Bishop - Queen - Magic Seal - Fleet - Wind Spirit - Fire Spirit - Thunder Spirit - SP Class|
|Manakete - Fire Dragon - Divine Dragon - Mage Dragon - Ice Dragon - Wyvern - Sea Dragon (Unused) - Raven - Raven King - Cat - Tiger - Lion - Lion King - Heron - Hawk - Hawk King - Wolf - Wolf Queen - Red Dragon - White Dragon - Dragon Prince - Dragon King - Black Dragon - Taguel - Princess Crimea - Queen (Playable) - Empress - Ballistician - Chancellor - Chameleon - Conqueror - Lodestar - Bride - Guardian (Unused) - Dark Knight (Unused) - Black Knight (Unused) - Master Mage (Unused) - Lycian Swordfighter (Unused) - Lycian Knight (Unused) - Lycian Armorknight (Unused) - Merchant - Civilian - Child - Peer - Queen (Civilian) - Pontifex - Pilgrim - Vendor - Phantom - Horse - Naga (Unused) - Serpent (Unused) - Dark Knight (TearRing Saga)|