Best counter-picks
These heroes are listed as strong answers into D.Mon.
Tank
RamattraRamattra can pierce D.Mon's Barrier with Nemesis Form. Ravenous Vortex also limits D.Mon's access to the backline.
Damage
MeiD.Mon cannot fly, so Mei can cut her off from allies with Ice Wall after a deep frontline commitment.
TorbjörnD.Mon's short reach and limited Fusion Repeater damage make it difficult for her to clear Torbjörn's turret.
Support
BaptisteD.Mon has difficulty accessing high ground, so Baptiste can use Exo Boots to create distance from her approach.
LifeweaverD.Mon has difficulty accessing high ground, so Lifeweaver can create distance from her approach with Petal Platform.
Jetpack CatD.Mon has limited answers to airborne heroes, so Jetpack Cat can remain outside her effective close-range pressure.
Favorable targets
D.Mon is listed as performing well into these heroes.
Tank
SigmaD.Mon can use her mobility to take angles outside Sigma's preferred range and block Accretion with Barrier.
ZaryaD.Mon can stop attacking at any time, making it harder for Zarya to build energy from her barriers.
DominaD.Mon can take side angles and enter the close range where Domina is weakest.
Damage
CassidyD.Mon can close distance on Cassidy and use Barrier to block Flashbang, turning the matchup into a close-range mind game.
SombraD.Mon can deploy Barrier to cancel Hack, reducing Sombra's ability to stop her engagement.
ShionD.Mon can chase Shion while Evade is unavailable, creating reliable kill pressure after Shion commits.
Support
AnaAna has little mobility; if D.Mon closes in, Barrier can contest Sleep Dart and Biotic Grenade while D.Mon pressures her.
BrigitteD.Mon's melee primary fire pierces Brigitte's Barrier, and her mobility makes it difficult for Brigitte to disengage once caught.
MercyMercy often stays near allies to heal or boost, allowing D.Mon to pressure her and nearby teammates with close-range attacks.