Who was the character was voiced by?

Or:
"Who is the character voiced by?"
"Who did the voice for [character name]"

Today, I watched a brilliant movie with, using subtitles, called Transformers One.

In English, they're called the "Transformers" (plural) :D

The original sentence was fine but the correction sounds a bit more natural.

My favorite is the first Transformers movie released in 2007, but I came to like this Oone just as much as the first's.

The story is about the first meet among ing between Optimus Prime, Megatron, and, my love, B. ¶
¶
¶
I can empathize with Megatron, so I recognalized I would never be a hero.😆 ¶
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As for Elita as, one of main characters, I thought I've ever heard its recognised the voice from somewhere.

Alternatives for the last sentence:

"..., the voice seemed vaguely familiar"
"..., I thought the actor's voice sounded familiar"

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I haven't seen the movies in a long time so I can't remember if Bumblebee was called "Bee" or "B". Either is possible!

In English, we can sometimes call people or objects by the first letter in their name
(e.g. Charles Xavier from the X-Men is called "X", or I used to call my favourite teacher "Mrs. J")

This also commonly happens with curse words (e.g. "A-hole")

But I would assume "Bumblebee" was nicknamed to "Bee".

But its name didn't come up in mind soonAt first, I couldn't place the voice.

In English, we can use "place the" when we are trying to make these connections in our mind.

-- "She had a strange accent so I couldn't place where she was from"

-- "I recognized the face of the girl but couldn't place where I knew her from"

Watching the movie, whilest I was thinking about who thait was, suddenly itsthe name came up in mind at thepopped into my mind during a scene thatwhere Elita said ”optimism” to Optimus Prime.

When we refer to our internal thoughts, we don't say "came up". You can use things like:

"It popped into my head", or

"It dawned on me who the actor was"

I guessed it was Scarlet Johansson.

When I saw the credits roll, I found Ithat I had guessed right.

I giggled to myself thinking how many Hollywood movies I've watched sto far because I guessed rightbe able to identify the actor by their voice.

"so far" doesn't quite fir in this context. If you want, you could add:

-- "I giggled to myself thinkign how many Hollywood movies I've watched in my life" or

-- " I giggled to myself thinking how many Hollywood movies I've watched recently"

Incidentally, the voice of Optimus Prime is Christopher Hemsworth, and the voice of Alpha Trion is Laurence Fishburne, but I wasdidn't aware ofrecognize their voices even though they are the actors I like very much....

Anyway, I'll never get tired of watching characters' transformingthe transformation scenes, no matter how many times I've watcseen thedm.

トランスフォームするシーン → does this refer to the specific scenes where the Transformers transform between vehicle and robot?

I can't stop being excited with moviesalways enjoy watching movies involving technology.

It has evolved up to here.

This sentence doesn't make sense.

Based on the Japanese, you might want to say something like:
"I am impressed by how much movie techniques have advanced"

Who was the character was voiced by?

Today, I watched a brilliant movie (with subtitles) called Transformer One.

"With subtitles" is a secondary concept. You could also write it as a separate sentence, for example: "I watched it with subtitle because the movie was in English."

My favorite is the first Transformer released in 2007, but I came to like this One as much as the first's.

Normally, you wouldn't write "One" capitalized. However, since the movie is "Transformers One," the way you wrote it makes it a nice pun.

The story is about the first meet among ing between Optimus Prime, Megatron, and my love B. ¶
¶
¶
I can empathize with Megatron, so I recognized I would never be a hero.😆 ¶
¶
¶
As for Elita as, one of the main characters, I thought I've ever heard its voice somewhere.

But ithe actor's name didn't come up in mind soonto mind right away.

Watching the movie while I was thinking who that was,I thought about it while I watched the movie, and suddenly itstheir name came up in my mind atduring the scene thatwhere Elita said ”optimism” to Optimus Prime.

I guessed (that it was) Scarlet Johansson.

When I saw the credit roll, I found I guessed right.

Normally, in American English, we just call it "the credits". "When I saw the credits,"

I giggled to myself thinking how many Hollywood movies I've watched so far because I guessed right must have seen to be able to guess the actor by their voice.

Incidentally, the voice of Optimus Prime is Christopher Hemsworth, and the voice of Alpha Trion is Laurence Fishburne, but I wasdidn't aware ofrecognize their voices even though they are the actors I like very much....

Anyways, I'll never get tired of watching characters' transforming, no matter how many times I've watched.

You could also write "characters' transformations" if you want to use the possessive form.

I can't stop being excited withby movies technology.

It has evolved up to here.

This sentence doesn't really feel natural. I would probably write "It has come a long way." Or "It has evolved a lot (from the early days)."