Who is the Japanese voice actor for Mrs. Darlian?

The Japanese voice actor for Mrs. Darlian is Yumi Touma.

Which anime is Mrs. Darlian from?

Mrs. Darlian appears in Shin Kidou Senki Gundam Wing.

In Shin Kidou Senki Gundam Wing, Mrs. Darlian is listed as a supporting character.

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Vice Foreign Minister Darlian's wife and Relena's adoptive mother. [Wikipedia]

Shin Kidou Senki Gundam Wing

Yumi Touma

Japanese

Lisa Ann Beley

English

Isabelle Maudet

French

Patrizia Scianca

Italian

Rosa Maria Baroli

Portuguese (BR)

Patricia Mainou

Spanish