- Beware the Nice Ones: Monica is generally so sweet that on the occasions she gets mad, or utilizes her angelic powers in a forceful way, it's pretty jarring.
- Cute but Cacophonic: Monica cannot sing (though in real life, Roma Downey has put out a CD of her own or two). One episode centered on how much it hurt Monica not to be able to sing the way she wanted to, to the point that it jeopardized her helping an assignment, a young adolescent vocalist played by Charlotte Church.
- The Hero
- Fiery Redhead: Once in awhile, although she gets more passionate than actually angry.
- Actually, she can become very angry. In Season Six's "The Compass," she takes this so far as to slap her assignment.
- Friend to All Children: She loves kids.
- Friend to All Living Things: She enjoys animals, everything from cows to caterpillars, and can also speak with them fluently.
- Must Have Caffeine
- Well Done My Child Angel: Monica alludes to this in Season 3's "Clipped Wings," saying that she's been so afraid of letting God down, she forgot about His mercy. In the same episode, she is so scared of being thrown out of God's kingdom that she begs the Angel of Angels to let her stay, even if she has to scrape gum from theater seats.
- Deadpan Snarker
- Good Is Not Nice: She is a lot more no-nonsense than Monica.
- Magical Negro
- The Obi-Wan
- Sassy Black Woman
- Beware the Nice Ones
- Don't Fear the Reaper: He might be the Angel of Death, but he's passionate about people understanding that death, if you have made your peace with God, is not meant to be scary. Even for those who have not done this, he's more serious and pitying toward them than vengeful. He somewhat reluctantly explains this to Gloria: "Their final journey...is not so good."
- Grim Reaper: He's the Angel of Death, and hates being stereotyped as this.
- The Lancer
- Brainy Brunette: Computer-like brain at that.
- The Cutie
- The Glasses Gotta Go: Inverted. Monica's first order of business is procuring Gloria some glasses because her vision is blurry.
- The Smart Girl: Absolutely. Her brain is almost literally a computer, due to the fact that God wanted to create an angel for the twenty-first century. In the Season 8 episode "Chutzpah," Sam Silverstein even gives her the nickname "Smart Girl."
- Well Done My Child Angel: She hates the thought of letting God down.
Zack / God
- Big Good
- God Was My Copilot: In the final episode, when Monica befriends him as a complete stranger.
- Hero with Bad Publicity: He is framed for a deadly explosion at a school by the grief-stricken townspeople desperate for someone to blame. The explosion was actually caused by Satan, although Zack admits having been at the school the day of the tragedy. It turns out he was there to take the kids to heaven.
- The Scapegoat
- Secret Test of Character: When he is sentenced to life in prison, Monica vows to postpone any future assignments to protect him. This turns out to be the final test for her promotion, and she passes with flying colors.
- Walking Spoiler
- Affably Evil: He's not really scary or intimidating at all, just manipulative.
- Bitch in Sheep's Clothing: He takes many forms, including an 11 year old boy. Lampshaded by Tess.
- Big Bad: Duh.
- Manipulative Bastard
- Smug Snake
- We Can Rule Together: Tries this on Monica when she has a Heroic BSOD.
- Bitch in Sheep's Clothing: Especially since she can impersonate Monica.
- Evil Is Petty / Villain Decay: In her first appearance, she tries to trick a man into selling his soul and nearly succeeds. In her second, she merely tries to instill doubt and fear of failure in Gloria.
- Evil Twin
- Faux Affably Evil
- Manipulative Bitch
- Red Eyes, Take Warning
- Smug Snake