The phrase "a certain creature" is correct and usable in written English.
It can be used when referring to a specific but unspecified creature, often in a narrative or descriptive context.
Example: "In the depths of the forest, there lived a certain creature that was said to possess magical powers."
Alternatives: "a particular being" or "an unspecified animal".
Thus, I knew from the start that a certain creature would be trouble.
The general problem of consciousness is to explain, in Thomas Nagel's (1974) famous phrase, "what it is like" to be a certain creature with a phenomenal experience.
uttered by someone who wants to describe the mistake made by those around him who think that they see a little green man, similarly commits us to the existence of a certain creature of the imagination, one who has the property of being a trick of the light (cf. Kroon (1996 186)).
"I feel we appeal to a crowd that wants to go to a safe, convenient location that has certain creature comforts," said John Chatterton, the festival's 58-year-old founder.
McIntyre won a second Nebula for best novel (beating George RR Martin's A Game of Thrones) for The Moon and the Sun (1997), an alternate history set in the court of Louis XIV, where the Sun King believes his immortality is assured if he devours the flesh of a certain sea creature.
"They are particles that you can't see, so we can only judge them by the way they behave". Perhaps like this other certain creature he knows.
This is a place where certain creatures "laid eggs that were able to endure the dry season.
To celebrate, she launches into her favorite rabid chipmunk voice and says things in a frequency that only certain creatures (like Penny) can hear.
'Winter Seals and Water Birds of New York Harbor' (Sunday) Human residents may think of this season as a good time to get out of New York, but for certain creatures it's definitely a great time to come in.
And, just as certain creatures are the last surviving testimony to a form of life which nature has discarded, I wondered whether music might not be the unique example of what might have been - if the invention of language, the formation of words, the analysis of ideas had not intervened - the means of communication between souls.
Instead of being guided in his creative choices by knowing what decisions creatures would make if they were created, God would be presented from the beginning with a fait accompli — with the reality that he was going to create certain creatures, and they were going to behave in certain ways.
