History Heartwarming / Ben10UltimateAlien

-->'''Gwen''': No, you ''wouldn't.''

* At the end of Eunice's first episode, Ben sticking up for her against Azmuth [[spoiler: when the latter wants to [[WhatMeasureIsANonHuman deactivate her]] as a non-necessary Omnitrix prototype.]] Ben was ready to fight his old mentor over that one.

-->'''Kevin''': He trusted you! He ''loved'' you! And what did you do? ''You used him!''
-->'''Argit''': You know, I just don't understand you, Kevin.
-->'''Gwen''': No, you ''don't.''

-->'''Kevin''': He trusted you. He loved you, and you used him!

-->'''Argit''' (clawing at the ground): Oh no -- I lost everything! Do you know how much money I had in there?

-->'''Ben:''' But, Azmuth, I thought I proved I was worthy.
-->'''Azmuth:''' As usual, you don't understand. You ''have'' proved your worth. But this inferior copy of my Omnitrix isn't worthy of ''you.''
-->'''Ben:''' But-
-->'''Azmuth:''' OH FOR THE LOVE OF-! ''Look'' at your ''wrist''.
-->'''Ben:''' An Omnitrix?
-->'''Azmuth:''' ''The'' Omnitrix. An improved version I've been working on, ever since you were given the prototype six years ago.
-->'''Ben:''' I don't know how to thank you.
-->'''Azmuth:''' Keep doing the right thing.
-->'''Ben:''' I don't suppose you'd consider giving me the Master Control.
-->'''Azmuth:''' (''smirks'') Perhaps for your 18th birthday.

-->''Kevin decks him''

-->'''Azmuth:''' Perhaps for your 18th birthday.

* At the end of the last episode of the series before the credits, it says "In Memory of Creator/DwayneMcDuffie".

* Ben telling Kevin he's like the older brother he never had growing up.

* At the end of the first episode, Ben is about to enter school, fully aware everybody is now aware of his identity. As he is approaching, he talks with Julie and express concern that now everybody probably hates him. Julie's answer? She kisses him on the cheek, before saying "Not everybody".
* At the end of the last episode of the series before the credits it says "In Memory of Creator/DwayneMcDuffie".

* Charmcaster's HeelFaceTurn and friendship with Gwen in "Where the Magic Happens". Especially when she tells the guy who wiped out her magic-using species that "you can't get rid of all of us", referring to her people. And as she says this, she smiles at Gwen and holds her hand, showing that she's accepted her one-time enemy as basically a sort of sister.
* Ben telling Kevin that he's like the older brother that Ben never had growing up.
* This, from "Andreas' Fault", after Argit manipulates the trusting Andreas into a HeroicSacrifice:

* In a sick, sad sort of way, Kevin's "Can I have Quarrel back?" in Nor Iron Bars In a Cage to the prison warden was kind of heartwarming. The interaction in the flashback between Quarrel and a newly human-looking Kevin was also incredibly cute.

* In 'Ultimate Aggregor' Ben, Gwen, and Kevin were having a great time sharing jokes while drinking smoothies. What Ben says next really shows he misses the old times.

* Ben kissing Gwen on the forehead before he sacrifices himself in "Ultimate Sacrifice".

* At the end of the last episode of the series before the credits it says "In Memory of DwayneMcDuffie".

* Kevin's KirkSummation to Ra'ad in "Fused" -- if for no other reason than it shows how far he's come from the punk he was in the [[{{Ben10}} original series.]]

* Charmcaster's Heel Face Turn and friendship with Gwen in "Where the Magic Happens". Especially when she tells the guy who wiped out her magic-using species that "you can't get rid of all of us", referring to her people. And as she says this, she smiles at Gwen and holds her hand, showing that she's accepted her one-time enemy as basically a sort of sister.

-->'''Ben: But-

-->''Kevin hits him''

* Kevin's KirkSummation to Ra'ad in "Fused" -- if for no other reason than it shows how far he's come from the punk he was in the [[WesternAnimation/Ben10 original series.]]

* Kevin, the former EvilCounterpart, getting enraged when Argit talks the naive Andreas into a HeroicSacrifice.

* Ben kising Gwen on the forehead before he sarifices himself in "Ultimate Sacrifice".

* At the end of the last episode of the series before the credits it says "In Memory of DwayneMcDuffie".

At the end of the last episode of the series before the credits it says "In Memory of Dewayne McDuffie".