some people in the system use different sign offs than their first initial, or have the same letter but different case. as a guide:

• alduin: -A
• simon: -s
• atem: -P
• malik: -m or -c
• marik: -YM
• touzoku: -t
• ventress: -V
• rosalind: -R.Lutece
• henry: -h
• vriska: -vris
• callan: -C or -L
• saizo: -S
• pandora: -p
• v: -v