If I had to say out of all animated characters, that is hard its probable a toss up between Kenai from Brother Bear and Littlefoot from TLBT 

Plot: Right after rescuing his father ( Bron ) from the fire mountain, Littlefoot and his friends travel back to the great valley. The adventures of The Gang of Seven continue from there.
Red Claw returns as one of the many threats that Littlefoot, Cera, Ducky, Petrie, Spike, Chomper and Ruby will have to face.
One Day, Red Claw chases the gang again and Littlefoot gets separated from the rest of the gang.
As he tries to find the others, He stumbles on a trapped Sharptooth that he sets free and finds its Chomper's kind and age and a girl.
She is taken to a part of the great valley where Littlefoot can keep her a secret for a while.
Littlefoot secretly feeds her Creepy Crawlers and fish and soon as She understands what Littlefoot is saying, She is asked by Littlefoot if they can be friends and she nods.
Soon, The Girl Sharptooth and Littlefoot become bonded with each other and decide to show her to the rest of the gang.
It takes time for her to be liked and not feared by the gang.
They find peace down the line.
One of the themes is a relationship between Chomper and a female Sharptooth.
However, As the battle with Red Claw continues, Cera and the gang find other sharpteeth that are their age and become a gang of leaf eaters and sharpteeth.
One Day, The Gang is caught by the grown ups. At first, They took time making friends with the gang's Sharpteeth friends, Soon They bonded with the friendly Sharpteeth.
Alongside the Red Claw Threat, old enemies return like Ozzy, Strut, Rinkus and Sierra, Ichy and Dil.
However, Most of these enemies of the past might change from bad to good just like Pterano.

Strut, Rinkus, Sierra, Ichy and Dil may as well be the ones down the line.
Throughout the threats and adventures, Littlefoot and friends make new friends from The three geological eras of Prehistoric Times.
One Day, Chomper's parents come to the valley to tell Ruby that her Family is in danger from Strut's abusive brother Ozzy.
Chomper's parents also show that Chomper is now a brother and is no longer the only one in Pangea.

During the rescue Mission, Red Claw chases Ozzy, In the end escapes to one day get revenge on Littlefoot and The gang.

Chomper's Parents return to their own Valley full of friendly Sharpteeth under their leadership with Ruby's parents going to the great Valley.

Another serious threat comes to The Universe of The Land Before Time or Pangea.

Humans from a 22nd century earth that is on the edge of environmental collapse, come to Pangea.
Most humans settle in peace in colonies made by advanced technology from the dying earth.
Other Humans can be careless and greedy to try and take over Pangea.

I need people to roleplay as one character.

Littlefoot
Cera
Ducky
Petrie
Spike
Chomper
Chomper's Girlfriend
Ruby
Bron
Grandma Longneck
Grandpa Longneck
Shorty
Chomper's mother
Chomper's father
Tria
Topsy
Mama Swimmer
Papa Swimmer
Mama flyer
Ruby's Father
Ruby's Mother
Red Claw
Screech
Thud
Cera's Sharptooth
Petrie's Sharptooth
Ducky's Sharptooth
Ruby's Sharptooth
Spike's Sharptooth
Strut
Ozzy
Dil
Ichy
Pterano
And Any existing character or OCS good or evil is up to you. They can be Creatures from Paleozoic, Mesozoic and Cenozoic eras or Humans (Good or Bad) from the dying earth.

I am the narrator like all the films have in the start and end.

Note: The gang of seven's Sharpteeth can be any species that you can think of from the three prehistoric eras in geology.

Last of all, Welcome!

Organic

Settlement

A