You never stop to think why Rafael is the only human who can understand the Bumblebee? Why he learned so easy and so quick to read and understand the language cybertroniano, and as he learns what Ratchet teaches so fast? He has a connection with Ratchet very interesting. Don't you?
Maybein this fanfiction canunderstand.

After Megatron destroyed the Autobots ' base, Ratchet was alone, for him and it was over, and he will never be the same again. He was even missing from humans, even the Miko, she can be so noisy, but she was the one who gave his life for it. But he is not only pessimistic and bitter that he surrendered to death in a junkyard hoping rust until the end.

He was there, in his bitter moment, when he heard a familiar voice. He'd be happy at other times, but he was too frustrated to be happy to see Rafael and Bumblebee coming your way.
"Ratchet! We need you. Only you know how to prepare a new with ... "
Ratchet soon cut the boy saying no, and undoing the joys and hopes of Raphael, with their negativity.
"They're all dead! You can be sure of that. " Even injuring his spark, the voice of Rafael there, calling for help he and Bumblebee. Ratchet chose to stay in the junkyard and waiting for corrosion.
He could see, Rafael was with his broken heart. He would be able to break any heart, but he never imagined breaking the heart of that boy, soon your favorite, and it was hard for him.

He can never understand, because he was so fond of that boy. He likes from other children until the Miko, but Raphael, that kid was special. He never saw a child interested in its culture as he.

Rafael was alone with Bumblebee trying to somehow make a copy obsolete computer that they had at the base. Ratchet saw it from afar.
"Awesome Bumblebee is a soldier; he has no intelligence to it. Rafael did everything. Probably, Bumblebee did just the hardest part, how to load the pieces and fit what was heavy. "
Ratchet was filled with pride.

It was a surprise when he saw Bumblebee Ratchet coming with his famous "yp yp yp." Let the professional here work "
Rafael just looks at him glad your friend back, and ratchet couldn't hide a smile of proud of him.

During this time, they began a difficult job; gather each of the Autobots, and Ratchet dived his memoirs in other eras when Cybertron was a peaceful planet. Ratchet was never forthcoming, his humor has never been a draw for a femme, but that doesn't obstruct your dream, be a parent or a Sire. So he started working on a protoform, a cocoon that would contain your D.N.A., thus creating her clone. It would be like your baby, a sparkling wine. Ratchet was preparing to be like him. His son, their sparkling. But when the war broke out, Megatron did terrible things, sequestrations of sparkling for his soldiers, and unfortunately, he takes this protoforma in order to be more one of his Vehicons. Ratchet tried to rescue his sparkling, but it was in vain. The ship with protoform exploded, and he never saw that it would be continuing it again.
Ratchet knew it would be impossible to find him again, if not destroyed in the explosion was lost in space. Forever.
Ratchet stared at Rafael love in their optics. He is the son he never had. Smart, dedicated and was learning their culture, reading Cybertroniano and interesting. He is the only human being who understands the Bumblebee.

Given time, Ratchet noticed something strange. As soon as the Moonlight reflected on your Brown eyes, small flashes blue appeared for seconds. Ratchet would like to see it again. Bumblebee is the only one who knows about his family, loud and large, where Rafael is the youngest of the twelve brothers and sisters. A family so loud that, as he once said, he needs someone to hear him. Maybe that's why he'd rather stay with Bumblebee and Ratchet.They is the only ones who listen.

When they were all together again, he felt happy; especially when he saw Ultra Magnus with them.That will put the order in place, but no sign of Optimus and Smookscreem.

Even alone, now they had to find a way to destroy the Dark Tower that Megatron built on Earth, and eliminate the creature that Shockwave arranged knows where, and Arcee found a very effective way.
"There's a part of this planet so cold, that this creature can freeze in minutes and stays there forever."
When Ultra Magnus met Raphael, was surprised with him.
"Our culture is very difficult for an adult, let alone a sparkling".
"But Rafael is not a simple sparkling wine." Ratchet explained proudly. "He's my student."
"My follower. Sir "Replied Ultra Magnus.
Ultra Magnus was very boring with these rules. We are on Earth and here we saw something new, a new concept. Ratchet thought to himself.

Finally Ultra Magnus got through the bridge of the Earth, sending the creature to the South Pole, the Optimus is back with a new form then send the Deceptions out for a good time. Fowler's agent found a safe place for them. All normal until Ratchet see the blue Flash in the eyes of Rafael. Miko and Bumblebee also.
Not only that. Rafael just that; Rafael can clearly understand some frequencies from an Autobots to another.

Original

O Agente Fowler encontrou um lugar seguro para eles.