性格は

personality

→ 性格
phrase Uncommon #13,911
personality は marks 性格 as the topic of the sentence.
JA: 彼女の性格は明るいです。
EN: Her personality is cheerful.

我々の性格は環境の影響を受ける。

Our personalities are influenced by our environment.

メアリーは母親と外見は似ているが性格は似ていない。

Mary resembles her mother in appearance, but not in personality.

彼の性格は父の性格と似ている。

His personality is similar to his father’s.

君の性格はどちらの親に似ているの。

Which of your parents do you take after in terms of personality?

あのいとこは見かけは似ているが性格はまるで違う。

Those cousins look alike, but their personalities are completely different.

彼の性格はまさに君が言った通りだよ。

His personality is exactly as you described it.

彼らの性格はあまり合わない。

Their personalities don't really mesh.

ヨシオは性格は母親に、容貌は父親に似ている。

Yoshio takes after his mother in personality and his father in appearance.

メアリーはすごく美人だけど性格は余りよくない。

Mary is very beautiful, but she doesn't have a very nice personality.

私の性格は全然真面目ではない!

I'm not a serious person at all!

サミュエルの性格は考慮される彼に何があったか?

Is Samuel’s personality taken into consideration given what happened to him?

— 落下の解剖学 (2023)