Master Roshi was 307 years old when Gokou was born.

Master Roshi began to go perverted at 123 years old, when he began buying porno magazines.

Granpa Gohan was 79 years old when he found Gokou in the forest.

Klilyn is 1 year older than Gokou.

Yamcha and Tenshin-han are 4 years older than Gokou.

Bulma was 16 years old when she met Gokou.

Gokou told that he was 14 years old when he met Bulma. In the first Tournament, he confessed that he was really 12 years old and that he didn't know how to count before.

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

Goten is 1 year younger than Trunks.

Pan was 5 years old when Dragonball Z ended. At the beginning of Dragonball GT, she was 14.

Bra was 4 years old when Dragonball Z ended.

The first Tenkaichi Budoukai was held 87 years before Gokou was born.

Gohan was 4 when he was first introduced (not 5 and a half like what the American dubbed version of Dragonball Z said). He trained under Piccolo for one year, then went to Planet Namek for another year. By the time Future Trunks arrived, Gohan was 7. In the Cell Series, Gohan trained for three years in preparation of the androids. At 10, he trained for another year in the Room of Spirit and Time in Sky Palace. At 11, Gohan killed Cell. At 16, Gohan entered Orange Star High School.

Dende was 5 years old when he first appeared.

Kami was over 900 years old when he fused with Piccolo