Guru Angad Dev Ji was a devoted disciple of Guru Nanak before becoming the second Guru. He is credited with standardizing the Gurmukhi script, which became the written language of Sikhs. He promoted physical fitness through Mall Akhara and emphasized free community kitchens (Langar). His 62 hymns are included in Guru Granth Sahib Ji.

Guru Ram Das Ji founded the city of Amritsar (originally called Ramdaspur), which became the spiritual capital of Sikhism. He excavated the sacred pool at Amritsar and began construction of the complex that would later house Sri Harmandir Sahib (Golden Temple). He composed the four Lavans — the sacred hymns sung during the Anand Karaj Sikh wedding ceremony.

Guru Hargobind Ji transformed Sikhism into a faith that combined spiritual devotion with martial valor. After his father Guru Arjan Dev Ji's martyrdom, he wore two swords — Miri (political authority) and Piri (spiritual authority). He built Sri Akal Takht Sahib and maintained an army, engaging in four battles against the Mughal forces. He is known as the 'Warrior Saint' of Sikhism.

Guru Har Krishan Ji became the eighth Guru at the tender age of just 5 years. Known as 'Bala Pir' (Child Saint), he demonstrated exceptional wisdom and spiritual power at a very young age. When a smallpox and cholera epidemic struck Delhi, he served the sick and suffering at great personal risk. He contracted the disease himself and passed away at age 7. Before departing, he uttered 'Baba Bakale' indicating that the next Guru would be found in Bakala.

Guru Gobind Singh Ji was the tenth and last human Guru of the Sikhs. On Vaisakhi 1699, he created the Khalsa — the community of initiated Sikhs — and gave them the five Ks (Panj Kakaar). He fought 14 battles against Mughal and hill-chief forces. He lost all four sons and his mother to persecution but never gave up. Before his passing in 1708 at Nanded, he declared Guru Granth Sahib Ji as the eternal, living Guru of the Sikhs.