Zach has been archenemies with with the Kratts since they were children, but his plans are always foiled by the them. He went to science camp with Aviva when they were children and has a rivalry with her. Black balloons help lift up Zach's spirits. He also probably has a fear of animals since he always screams when he sees an animal. Unlike "The Next Digi-Destinies," he has none of the Digi-Destinies as his mentor and has a crest that's only for evil.
DemiDevimon-DemiDevimon is an Evil Digimon whose name and design are derived from "Piccolo (Ita: Small), or pico, Devimon" and whose English name is derived from "Demi Devimon". It plays spiteful tricks. It resembles a bat. DemiDevimon is a constant liar and, with great skills in wording, it can fool almost anyone with its sweet-sounding "Evil Whisper" lies.
Devimon- The champion form of DemiDevimon. Devimon is an Evil Digimon whose name and design are derived from the mythological Devil. Its body is clad in jet-black cloth. Although it was originally a shining Angemon-species Digimon, it became a fallen angel when it was won over to the Dark Side and fell to the Dark Area. As proof of that, the Mark of Evil surfaced dramatically on its chest. Although it has a cunning and fiendish personality, it also possesses an outstanding intellect. It is said that those who have stared into its two eyes, which shine a deep crimson, are mind-controlled and completely dominated by Devimon.
SkullSatamon-The ultimate form of Devimon. SkullSatamon is an Undead Digimon whose name and design are derived from "Skull" and the mythological Satan. Pursuing strength and destruction, it fell to the Dark Area as a Fallen Angel Digimon with its appearance a ruin of what it once was. However, its wickedness was refined even more, so that its dark powers are unfathomable. Its DigiCore, concentrated with mighty powers of darkness, is the characteristic of Demon-species Digimon called the "Dark Core".
The Crest of Darkness