Template:Monsterlink
For example:
{{monsterlink|Adder}}
gives you: S
Adder
If name of the page about monster is different from the monster name for example it has (monster) in parentheses at the end, the following syntax could be used:
{{monsterlink|Vampire (monster)|Vampire}}
results in: V
Vampire
If you only wish to have different text, for example for plural form of a monster's name, use 'text' parameter:
{{monsterlink|Yak|text=Yaks}}
results in: Y
Yaks