Find the missing character?

The missing character is S.

The sequence is a simple alternating repetition of the letters A, B, C, and D. The first letter is A, the second letter is B, the third letter is C, and the fourth letter is D. The fifth letter is A, the sixth letter is B, and so on.

The missing character is the letter

24.8 41.5 48.3 47.8C117.2 448 288 448 288 448s170.8 0 213.4-11.5c23.5-6.3 42-24.2 48.3-47.8 11.4-42.9 11.4-132.3 11.4-132.3s0-89.4-11.4-132.3zm-317.5 213.5V175.2l142.7 81.2-142.7 81.2z"/> Subscribe on YouTube