Okay so JK Rowling said that Godric was the Giant Squid. Personally I disagree but I suppose it would be fun to write about it.
The Courageous Never Die
He lay beneath the waves waiting.
For nearly 1000 years he had watched over and protected the students. He had played with them, letting his tentacles tickle them and shade them on hot summer's days.
He had seen the changes through the centuries. Newer windows, new towers, the destruction of the muggle style jousting arena. He had seen the subjects come and go and new teachers through the windows. He had seen dementors, and sieges and attacks of werewolves and vampires. He had seen the institution of uniforms and the change of them as well. He had seen pranks and death and dirty deeds preformed on the grounds. But he had never seen such a war to end all wizarding wars. And the calm was invigorating even to his 1087 year old self.
His eyes flicked to the large clock on top the highest tower. It was nearly 11 o'clock and the sun had faded. He propelled himself to the shore and waited.
Not a soul was out, as curfew had struck. It was like the last thousand years, he had never been seen once, not even when the giants were destroying his lovely school. That war was horrible, though he had sent some curses into the fray to help the side of good. And when he saw that boy pull out his old sword his heart nearly burst with pride.
The clock struck and he transformed. Tentacles to arms and legs, watery body to human form and he stood on the shore content.
Short red brown beard matched shoulder length hair. He held a short wand in his red and gold robes. Golden half-crown sat upon his head as he sighed. In one thousand years he had hardly aged. Of course it was because he didn't face stress, which aged a person most. Godric Gryffindor started on his walk of the grounds.
He never stepped foot in the castle, it was far too dangerous to risk. He had met the ghosts of his daughter and her lover, blood-stained though he be. He didn't fear much from the dead, only from the living who could run and skip and laugh and betray.
He didn't know how he was still living, perhaps he had a purpose. Protecting the school seemed pointless with all the capable witches and wizards in the hallowed halls. He did wish to see Howart and Helga and dear lovely Rowena, but he still had not died.
Godric walked around the castle smiling at how the centuries had tried to destroy it but hadn't. He wished he could tell the students how proud he was of them all, learning ancient arts. But that was out of the question.
He sat on a log near the large willow. Not the whomping willow but the sun touched willow next to his lake. It was popular with the young people for relaxing and studying. He smiled and spun his wand in his hands. Peace.
Little did he know someone was watching him.
OoOoO
Okay I'm going to make it a few-shot. Not a long story but just a fun mess around thing.