DBZ Ages-

Kami was over 900 years old when he fused with Piccolo.

Yamcha is 4 years older than Goku

Bulma was 16 years old when she met Goku.

Goten is a year younger than Trunks.

Master Roshi was 307 years old when Gokou was born.He is immortal.

Krillen is older than Goku by 1 year.

Tien is 4 years older than Goku.

Gohan was 5 and a half when he first appeared. He trained under Piccolo for one year, then went to Planet Namek for half a year. When Future Trunks arrived, Gohan was 7. In the Cell Saga, Gohan trained for three years with Goku and Piccolo for the androids. At 10, he trained for another year in the Room of Spirit and Time in Sky Palace.Gohan killed cell at age 11.

Dende was 5 years old when he first met Gohan.

Trunks was 6 years old at the beginning of the Boo Series.

Grandpa Gohan was 79 years old when he found Goku.