Гримёр подготовил актёра к первому дублю.

Because актёра is the accusative singular form of актёр.

In Russian, masculine nouns that refer to animate beings often have:

• nominative singular: актёр
• accusative singular: актёра

So in this sentence, гримёр подготовил актёра means the makeup artist prepared the actor.

A useful rule:

• masculine animate noun in the accusative = looks like the genitive
• masculine inanimate noun in the accusative = looks like the nominative

For example:

• Я вижу актёра = I see the actor
• Я вижу стол = I see the table

Because the preposition к normally takes the dative case.

So:

• первый дубль = nominative
• к первому дублю = dative

Both words change because the adjective must agree with the noun:

• первый → первому
• дубль → дублю

In this sentence, к has the sense of for / in preparation for / toward.

So подготовил актёра к первому дублю means something like:

• prepared the actor for the first take

Here дубль is a film/theater word meaning take, as in a filmed attempt at a scene.

So:

• первый дубль = the first take

This is common in movie and TV contexts.

You may also hear:

• снять с первого дубля = to film in one take / get it on the first take
• второй дубль = second take

Подготовил is perfective, so it presents the action as completed.

• подготовил = prepared, got ready, finished preparing
• готовил / подготавливал = was preparing, used to prepare, prepared in an ongoing/repeated sense

In this sentence, the idea is that the makeup artist successfully got the actor ready for the first take, so the perfective verb is natural.

This is a very common Russian contrast:

• Он готовил актёра = He was preparing the actor
• Он подготовил актёра = He prepared the actor / got the actor ready

Yes. The verb подготовить often follows this pattern:

• подготовить кого? что? к кому? к чему?
• prepare someone/something for someone/something

So here:

• подготовил актёра = prepared the actor
• к первому дублю = for the first take

More examples:

• подготовить студентов к экзамену = to prepare the students for the exam
• подготовить доклад к конференции = to prepare a report for the conference

This is a very useful construction to remember.

Yes. Russian word order is flexible because case endings show the grammatical roles.

The neutral order here is:

• Гримёр подготовил актёра к первому дублю.

But you could also say, for example:

• Актёра гримёр подготовил к первому дублю.
• К первому дублю гримёр подготовил актёра.

These versions are grammatically possible, but they shift the focus or emphasis.

Very roughly:

• starting with Гримёр emphasizes who did it
• starting with Актёра emphasizes the actor
• starting with К первому дублю emphasizes the occasion / goal

Not exactly.

Гримёр is someone who does stage, theater, film, or performance makeup. The word is strongly connected with actors and productions.

Визажист is more like a makeup artist in the broader modern sense, especially for fashion, beauty, weddings, photo shoots, and cosmetics.

So in a film-set sentence with актёр and дубль, гримёр is a very natural choice.

Because adjectives in Russian must agree with the noun they describe in:

• gender
• number
• case

Here the noun is дубль, which is:

• masculine
• singular
• dative (because of к)

So the adjective must also be masculine singular dative:

• первый дубль
• к первому дублю

This is the same pattern you see in other phrases:

• к новому фильму
• к важному разговору
• к следующему уроку

The letter ё is always stressed.

So:

• гримёр → stress on -ёр
• актёра → stress on -тё-

This is helpful because written Russian often omits the dots and writes е instead, but the correct pronunciation is still ё in these words.

Approximate pronunciation:

• гримёр = gri-MYOR
• актёра = ak-TYO-ra

Also note:

• пе́рвому has stress on the first syllable
• ду́блю has stress on the first syllable

No. The grammar makes the roles clear:

• Гримёр is the subject: the one who did the action
• актёра is the direct object: the person affected by the action

So the sentence means that the makeup artist prepared the actor, not that the actor prepared someone or himself.

If Russian wanted to say the actor prepared himself, it would normally use a different structure, for example with подготовился:

• Актёр подготовился к первому дублю. = The actor got ready for the first take.