The Pollyanna: As evidenced in The Blues With Larry, when he fails at singing the blues because he's just too darn happy. Blind Lemon's attempts to make him sad fall flat, to the point where he leaves in disgust.
Characterization Marches On: Originally, Archie had a distaste for Larry's silly songs, but since then he's loosened up over time and has even sung some of his own silly songs.
Establishing Character Moment: His first scene in the series was when he ran onstage to tell Larry that the song he was singing was too silly in "The Water Buffalo Song". For a long time after that his distaste for "Silly Songs" and his desire that the show be highbrow and taken seriously was what drove his character, although he eventually loosened up a little.
Nice Guy: He's very kind and thoughtful, although he can occasionally be careless.
Unnamed Parent: Is never given a proper name in any role he has played. Most of the time, he's just Dad Asparagus; in "Larry's Lagoon" he's only ever called "The Professor", and even in The Star of Christmas and An Easter Carol where he plays a reverend, he is called "Reverend Gilbert" but is never actually given a first name.
Good Parents: Can be a bit oblivious sometimes, but is generally a loving, supportive mother to Junior.
Heel-Face Turn: Almost any time he plays a villain, his character will be redeemed by the end of the episode.
Mean Character, Nice Actor: Plays a villain pretty regularly and even has some harsh moments in his non-villainous roles, but the few times you can catch him when he's not acting, such as on one of the Christmas CDs when all the Veggies are just chilling out at Bob's house, Mr. Nezzer seems like a pretty nice fellow.
Playing Against Type: In Josh and the Big Wall he gets a cameo as Moses, and in Lord of the Beans he plays Randalf. In both cases, he is playing a character who is good and wise. Typically the characters he plays lack either goodness (at first), wisdom, or both.
A Hispanic gourd who grew up in New Jersey.
Cloudcuckoolander: Has shades of this, particularly in the outtakes for Jonah, in which he states that his aunt was apparently a lobster. Even Larry calls him weird.
Eyeless Face: Mr. Lunt uses his forehead or the brim of his hat for expression.
A rhubarb who plays a love interest to Larry in several episodes.
A lady asparagus who tends to accompany Archibald.
Chuck Cunningham Syndrome: She appeared in "Larry's Lagoon" and "The Story of Flibber-O-Loo", then disappeared for a while, then reappeared in Silly Sing-Along 2: The End of Silliness?!, and then never appeared again.
Official Couple: With Archibald; in "Larry's Lagoon" she's said to be his wife, and all other times she's appeared she's paired off with him.
The Cameo: He has a brief appearance in Jonah: A VeggieTales Movie as a fisherman.
The Storyteller: He is the narrator in both Rack, Shack, and Benny and The Toy that Saved Christmas. The latter uses him telling bedtime stories to his granddaughter Annie as a Framing Device, and he is also tells the story of Christmas to the protagonists in that episode.
The title character of Esther: The Girl Who Became Queen. After she becomes queen, she learns of a plot against her people and has to do something about it.
Affirmative Action Girl: Was intended as this, but it didn't pan out. Because of technical difficulties with her hair.
Face Your Fears: The whole point of her story arc; she is the only person who can save her people and she has to do some pretty scary things to do so.
Non-Standard Character Design: She was designed specifically to be beautiful. This somehow led to her hair being a lot silkier than most Veggies' hair, and her eyes look nothing like the eyes of any other Veggie either.
Fibrillious Minimus ("Fib")
The Corrupter: Over the course of Larry-Boy! And the Fib from Outer Space he convinces Junior to tell lies, and by the time Junior realizes his lies have been powering Fib it's far too late to stop any damage from being done.
Death by Irony: He's powered by lies. The way to defeat him is for the person who lied in the first place to tell the truth.
Karmic Death: The only one able to defeat him is that kid he's been carrying around for half the episode.
Hive Mind: All the little weeds seen throughout are connected by the "Mother Weed" underground.
The Bad Apple
Other non-vegetable characters
The eponymous toy of The Toy that Saved Christmas. One day he mysteriously comes to life, realizes he doesn't like the sound of what those around him seem to think Christmas is, and sets out to learn what Christmas really means.
Mundane Utility: At the end, he initially wants to get rid of his buzz-saw because he thinks it's dangerous...and then he changes his mind and goes into carpentry.
My Little Panzer: He's a toy. Marketed to small children. He has a fully-functional buzz-saw built into his arm.
Remembered I Could Fly: In a situation where his saw would really come in handy, he doesn't think to use it until Larry accidentally bumps his arm.
Sir Not-Appearing-in-This-Trailer: Averted later on, but on the original cover of The Toy that Saved Christmas when it was first released, he is so conspicuously absent that the rest of the cast seems to be aware something's missing from the picture.
Unusually Uninteresting Sight: No one seems the least bit perturbed that he is a talking toy. Even the fact that Louie seems designed to resemble a human in a world of talking vegetables goes uncommented on; the only person to note that he's the only one who has arms is Louie himself.
A half-caterpillar half-worm who was introduced in Jonah: A VeggieTales Movie. For tropes pertaining to his role in the film, see here.Since then he has made several appearances throughout the series.
Insistent Terminology: In Pistachio, he takes serious issue with constantly being called a cricket, insisting that he is a caterpillar (well, that is only half true.) At the end of the episode Pistachio sticks up for him.
Jerk with a Heart of Gold: At the start she acts rather mean to Mr. Nezzer and snarks at him every other line, but she really is there to help him and when he really does have a breakdown she tries to comfort him.
Took a Level in Kindness: After Mr. Nezzer becomes incredibly upset over learning that Edmund could very well die and his parents already know, Hope becomes a lot gentler and aside from one brief moment drops the snark entirely.
Unexplained Accent: Due to her voice actress, she has an Australian accent, in an episode set in London, where most of the cast have unexplained American accents.
The protagonist of the short "A Snoodle's Tale", who after being born into the world decides to try to find out what his purpose in life is.
All of the Other Reindeer: The other Snoodles are bigger and stronger and better than him at just about everything, and they make fun of him because of it.
Desperately Looking for a Purpose in Life: He figures that maybe since he has wings, he could be good at flying. It doesn't work. He figures that since he has paint maybe he's good at art. That doesn't work either. And so forth.
The Elders of the Razzberry Forest
Wise trees in The Lord of the Beans that the Fellowship of the Bean visit to ask what they should do with the Bean.
Composite Character: Most obviously, Lord Falaminion Tereglith in particular takes after Treebeard. Less obviously, he also takes after Saruman, of all people.
Everything's Sparkly with Jewelry: Lord Falaminion Tereglith is wearing a beautiful necklace and Randalf comments on it. Apparently the ancient tree has an eye for beautiful things. It was given as a bribe by Scaryman.
Nice Job Fixing It, Villain: They sent Toto to the Land of Woe to get ambushed by Scaryman. This wound up leading to Scaryman's defeat by Toto's uncle and Toto deciding to use the Bean to help the people suffering in the Land of Woe.
Treacherous Advisor: They sent Toto to the Land of Woe so that Scaryman could ambush him while he was alone.
When Trees Attack: They don't take making fun of their language very kindly and imprison the Fellowship after Ear-A-Corn laughs at them. When the Fellowship escapes the trees start throwing fruit at them.
Wise Tree: The reason Randalf decides to go and ask them for advice concerning the Bean. Bad idea.