This is the “Fused Form” of Twilight and Veemon, a digimon with the equivalent power of a Mega.
*Digimon Analyzer: Eclipsedramon*
Type: Warrior
Attribute: Data
Level: Mega
Special Attacks: Twilight Umbra, Luster Spark, Mega Eclipse Crusher
Eclispedramon is an extrodinarily powerful digimon with control over both darkness and light, and can combine the two into a devastating attack, “Mega Eclipse Crusher” that few can survive. Unfortunately, the attack also causes massive collateral damage and will kill any nearby, so it is often impractical to use.