Mantra is a Buddha's preach. Mantra is called "the language of a magic speil", or "secret language." In esoteric Buddhism, Mantra is very important language. It is "the wonderful power" beyond "language." 、I imagine the Buddha in my heart, change mantra to an abstract pictorial symbol, and am drawing the picture.  
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Fudou-myouou (Acala)
Mantra/Namah samanta-vajranam canda-maharosana sphotaya hum trat ham mam
Fudou-myouou (Acala) is the Buddha which eliminates what turns against Buddhism and expresses the power of Mantra.If you recite the Mantra of Fudou-myouou, you can get divine favor.A match can be won.Success in life.Prosperity in business.
   
   
Shaka-nyorai (Sakyamuni)
Mantra/Namah samanta-buddhanam bhah
Shaka-nyorai (Sakyamuni) has realized Buddhism and spread the instruction of Buddhism.If you recite the Mantra of Shaka-nyorai you can get divine favor.Worldly desires are lost.Spiritual enlightenment is obtained.
   
   
Monju-bosatsu (Manjusri )
Mantra/Om a ra pa ca na
Monju-bosatsu (Manjusri ) is the Buddha which gives the wisdom which solves difficulty.If you recite the Mantra of Monju-bosatsu you can get divine favor.Big wisdom is acquired.All crimes are extinguished.
   
   
Fugen-bosatsu (Samanta-bhadra)
Mantra/Om samayas tvam
Fugen-bosatsu (Samanta-bhadra) is the Buddha with the virtue of increased profits and the prolongation of life.If you recite the Mantra of Fugen-bosatsu you can get divine favor.Misfortune is avoided.Increased profits.Prolongation of life.
   
   
Jizou-bosatsu (Ksiti-garbha)
Mantra/Om ha ha ha vismaye svaha
Jizou-bosatsu (Ksiti-garbha) is the Buddha which saves people and is led to spiritual enlightenment.If you recite the Mantra of Jizou-bosatsu you can get divine favor.Good harvest.Veneration.Success in life.
   
   
Miroku-bosatsu (Maitreya)
Mantra/Om maitreya svaha
Miroku-bosatsu (Maitreya) is the Buddha which descends with future from heavens and expresses the world of an ideal.
   
   
Yakushi-nyorai (Baisajyaguru)
Mantra/Om huru huru candli matangi svaha
Yakushi-nyorai (Baisajyaguru) is the Buddha which saves all sick persons.If you recite the Mantra of Yakushi-nyorai you can get divine favor.A life is prolonged and the illness heals up.
   
   
Kanzeon-bosatsu (Arya-Avalokitesvara)
Mantra/Om arolik svaha
Kanzeon-bosatsu (Arya-Avalokitesvara) is the Buddha which has mercy and saves people from all misfortune.
   
   
Seishi-bosatsu (Masthama-prapta)
Mantra/Om sam jam sah svaha
Seishi-bosatsu (Masthama-prapta) is the Buddha which illuminates all by light of wisdom.
   
   
Amida-nyorai (Amitabha)
Mantra/Om amrta-teje hara hum
Amida-nyorai (Amitabha) opened paradise in order to save pain of people.
   
   
Ashuku-nyorai (Aksobyhya)
Mantra/Om aksobhya hum
Ashuku-nyorai (Aksobyhya) is the Buddha which causes the peace of the heart
   
   
Dainichi-nyorai (Mahavarocana)
Mantra/Om a vi ra hum kham
Dainichi-nyorai (Mahavarocana) is the highest Buddha in the universe, and is the Buddha of the center in the esoteric Buddhism world.If you recite the Mantra of Dainichi-nyorai you can get divine favor.All illnesses heal up.Virtue can be acquired.
   
   
Kokuuzou-bosatsu (Akasa-garbha)
Mantra/Namo akasa-garbhaya, Om alika mali muli svaha
Kokuuzou-bosatsu (Akasa-garbha) is the Buddha which increases the increase of wisdom, and memory.
   
   
Senjukannon-bosatsu (Sahasra-bhuja)
Mantra/Om vajra-dharma hrih
Senjukannon-bosatsu (Sahasra-bhuja) The meaning of Senju is the 1000 hands.This bodhisattva's hand of 1000 is supposed that free power is demonstrated and people are saved from various suffering.