Ariko is not a popular first name. It is more often used as a girl (female) name.
First names and their meaning - Page 6938
Armour
Armour is not a popular first name. It is more often used as a boy (male) name.
Arnoldus
Arnoldus is not a popular first name. It is more often used as a boy (male) name.
Aros
Aros is not a popular first name. It is more often used as a boy (male) name.
Arthus
Meaning: Bear hero, A rock. 
Arthus is not a popular first name. It is more often used as a boy (male) name. 
Arzen
Arzen is not a popular first name. It is more often used as a boy (male) name.
Ashida
Ashida is not a popular first name.
Ashlinn
Origin: Scottish-Gaelic. 
Meaning: Dream, Meadow of ash trees. 
Ashlinn is not a popular first name. It is more often used as a girl (female) name. 
Atkinson
Meaning: Son of Aikens. 
Atkinson is not a popular first name. It is more often used as a boy (male) name. 
Azniv
Azniv is not a popular first name. It is more often used as a girl (female) name.