General Emerald is a minor antagonist whose defeat by Isaac and Ed on the ghost train happens almost entirely off screen. Ed and Isaac defeated his ten lieutenants, copies of themselves he had created, and General Emerald himself to clear the train and help the hobo ghost requesting their help.
- Owns a pink emerald sword.
- Can create gem-based clones of people.
|The Activity Club||The Consortium|
|Edward Burger | Isabel Guerra | Isaac O'Connor | Maxwell Puckett||Agent 13 | Boss Leader | Cinnamon Stix | Agent Day | Francisco Guerra | Greco Stucks | Texas Walker | Mina Zarei|
|Ms. Baxter | Vice Principal DuNacht | Mr. Garcia | Coach Oop | Mrs. McJohnson | Principal Pleezdoo | Mr. Puckett | Mrs. Puckett | Richard Spender | Mr. Starchman||Angry Band Kid | Ball Golem | Damien | Damien's sister | Dimitri Danger | Doghouse | Fitzgerald | Jeffavorite Flavors | Johnny Jhonny | Cody Jones | Lisa | Ollie Oop | Zoey Puckett | R.J. | Sam | Collin Sloinne | Stephen | Student Council | Susan | Violet|
|Spirits and Ghosts|
|Butterfly Ghost | Doctopi | Doorman | Eightfold | Flipflop | General Emerald | Forge | Ghost Train | Gorf | Hijack | Hissin' Pete | King C. | Lefty | Lucifer | Muse | Night Lamps | Nin | Patchworm | PJ | Queen of Kindness | Ravenous Gobbledygook | Scrapdragon | Sphinx of Games | The Shadow | Venus Guytrap | Vile Spirits|