Here's the complete Sonic Birthday list with zodiac signs!

January:

None

February:

Knuckles, February 2nd. Aquarius.

March:

Rouge, March 16th. Pisces.

April:

Silver, April 5th. Aries.

Charmy, April 20th. Taurus.

May:

None.

June:

Shadow, June 19th. Gemini.

Sonic, June 23rd. Cancer.

Dr. Robotnik (Eggman), June 23rd. Cancer.

July:

Sally (🙄), July 5th. Cancer.

Blaze (💅), July 24th. Leo.

August:

Vector, August 9th. Leo.

September:

Chaos (YAYAYAYAY!!!), September 9th. Virgo.

Amy, September 23rd. Libra.

October:

Tails, October 16th. Libra.

November:

Maria, November 1st. Scorpio. (For those wondering, she died February 7th according to my sources)

Espio, November 6th. Scorpio.

December:

Cream, December 12th. Sagittarius.

Vanilla, December 19th. Sagittarius.

(I'll add more birthdays for them soon. Bye!)