If by "Sonic's Team", you're referring to Team Heroes (see: Sonic Heroes), the youngest member would be Tails, at 8 years old. If you're referring to the Sonic the Hedgehog game franchise in genral, excluding the Chao (who all have vague, unknown ages), the youngest characters would be Amy and Charmy, who are both 6 years old.
Sonic Underground
The eldest was Garett
Princess Beatrice is the eldest by a year.
Don't know about most but its a pretty popular paring.
Sonic the Hedgehog Sonic the Hedgehog 2 Sonic the Hedgehog 3 Sonic & Knuckles Sonic the Hedgehog Spinball Dr. Robotnik's Mean Bean Machine Sonic 3D Blast Sonic CD Sonic Eraser SegaSonic Cosmo Fighter (Japan only) Segasonic the Hedgehog (Japan only) Sonic Chaos/Sonic & Tails (Japan only) Sonic Triple Trouble/Sonic & Tails 2 (Japan only) Sonic Drift Sonic Drift 2 Sonic Blast Tails' Skypatrol Tails Adventure Knuckles' Chaotix Sonic Jam Sonic R Sonic Adventure Sonic the Hedgehog Pocket Adventure Sonic Shuffle Sonic Adventure 2 Sonic Mega Collection Sonic Advance Sonic Advance 2 Sonic Advance 3 Sonic Heroes Shadow the Hedgehog Sonic Riders Sonic Riders: Zero Gravity Sonic Free Riders Sonic Rush Sonic the Hedgehog (Xbox 360/PS3) Sonic Rivals Sonic and the Secret Rings Mario & Sonic at the Olympic Games Mario & Sonic at the Olympic Winter Games Sonic Unleashed Sonic Chronicles: The Dark Brotherhood Sonic and the Black Knight Sonic Classic Collection Sonic the Hedgehog 4 Sonic Colors
functions of the sibling family is the eldest is in charge
Within the game continuity, Sonic has no biological family.
no,the whole family. but i guess the eldest would do more>
Dr. Carlisle Cullen
Yoshitiro-family's eldest son
No, he was the eldest.
NOPE! He was the eldest
Patriarchal?
He was the eldest son in a very poor family.
Rocket is the eldest brother in the Beaumont family.
His eldest sister is Olivia
well, jaleel white A.K.A Steve urkel on family matters used to play sonic the hedgehog in three shows from 1993 to 1999 and ,he did family matters from1990 to 1998. the names of the three sonic shows that he did were called "The Adventures of Sonic the Hedgehog", "Sonic the hedgehog, and "Sonic Underground" NN96