Gratitude is the sign of noble souls.
Gratitude is a disease of dogs.
Here's an index involving characters showing gratitude (and the lack thereof).
- And Your Reward Is Clothes: Someone gets clothes as a reward.
- And Your Reward Is Edible: When you get food as an expression of gratitude for heroics.
- Androcles' Lion: 'Cause even animals can show gratitude.
- Because You Were Nice to Me: When a character shows gratitude to the hero for being kind to him or her when no one else was.
- Complaining About Rescues They Don't Like: Someone is ungrateful of another person saving them.
- Crossing the Burnt Bridge: Somebody insults another person, believing they'll never see them again, but they do see them.
- Debt Detester: Somebody who hates owing anybody anything.
- Does Not Know How to Say "Thanks": A character has no idea how to respond to the character's act of kindness.
- Dude, Where's My Respect?: When nobody gives the hero any gratitude or respect s/he deserves.
- Dude, Where's My Reward?: When the hero isn't given the material/monetary reward that s/he's earned.
- Entitled Bastard: Isn't grateful for your help, yet expects you to help them anyways.
- Grudging "Thank You": Thanking a character, though with some reluctance.
- The Farmer and the Viper: When kind deeds are repaid with not only ingratitude but also an act of evil.
- Hospitality for Heroes: A shopkeeper gives away something free to show gratitude.
- 100% Heroism Rating: When everybody gives the hero the respect that s/he's earned.
- I Feel Guilty; You Take It: When the hero turns down a reward that s/he feels s/he doesn't deserve.
- Involuntary Charity Donation: Stealing from a villain and donating it to charity.
- I Owe You My Life: When the hero's reward is lifelong devotion and loyalty from whoever s/he helped.
- Keep the Reward: The hero turns down a reward (for reasons other than feeling guilty).
- Klingon Scientists Get No Respect: When the hero is disrespected because s/he doesn't wear his/her people's hat.
- Kneel Before Frodo: A gesture of respect and gratitude towards a hero who's lower on the social scale.
- Makes Us Even: a mathematical sort of gratitude often seen between characters with normally opposing agendas.
- Medal of Dishonor: Either someone fakes gratitude by making a lame award, or they are sincerely grateful but the person being awarded finds the award lame anyway.
- Recruited from the Gutter: Somebody has a bad life and another person saves them by recruiting them. This makes the other person work for/with them out of gratitude.
- Rescue Romance: When the hero's reward is love.
- Short-Lived Big Impact: Because sometimes imitation/inspiration is the highest form of flattery.
- The Simple Gesture Wins: After several grand gestures, the one that inspires the most gratitude is the unimpressive one.
- Smooch of Victory: When the hero's reward is a kiss. (Possibly a prelude to Rescue Romance.)
- Snarking Thanks: Showing gratitude in a sarcastic or insulting manner.
- Standard Hero Reward: Like Rescue Romance, but with royalty.
- Stolen Good, Returned Better: Somebody is grateful because while the other person did steal from them, they improved the item.
- Thank the Maker: Robots or artificial lifeforms view their creators as deities.
- Thank Your Prey: When the hero shows respect towards an animal s/he's killed for giving him/her sustenance.
- Thanking the Viewer: Because many creators and artists actually do depend on their loving fans.
- That Was the Reward: Someone refuses or destroys something, then learns it was a reward.
- Think Nothing of It: The hero doesn't accept the gratitude of others, usually due to being humble.
- Ungrateful Bastard: A character expresses a lack of gratitude to the one helping him/her.
- Wants a Prize for Basic Decency: Someone demands a reward for a courteous or noble action that everyone does.
- Why Couldn't You Save Them?: Someone is angry at the hero for their failure to save a loved one, regardless of whether there was anything the hero could have done to save that person's life.
- Why, Thank You, X!: Someone is busy and a person they thought would be impossible to be there (they thought they were dead, far away, etc) assists them. The person distractedly thanks the other person before realizing what happened and being surprised.
- You Would Do the Same for Me: Helping someone because they would've helped you out if you were the one in trouble.