These are images of Lucina.
Artwork of Lucina in "Marth" disguise in Awakening
Artwork of Lucina in "Marth" disguise from the boxart
Artwork of Lucina (Spring Festival) in Fire Emblem Heroes by Tomioka Jiro.
Artwork of Lucina (Brave Heroes) in Fire Emblem Heroes by Yusuke Kozaki
Lucina as a Bride in Fire Emblem Warriors
Artwork of Lucina from the 4koma Book
Concept artwork of Lucina and Robin
Concept artwork of Lucina as a Bride in Awakening
Lucina and Robin's newcomer art from Super Smash Bros. for Nintendo 3DS and Wii U
Artwork of Lucina as "Marth" from Fire Emblem Cipher
Figma figure by Good Smile
Lucina as a Lord in Fire Emblem Cipher
Lucina as a Great Lord in Fire Emblem Cipher