There is a powerful monkey (in your army) Nala by name, who is a skillful mechanic and the son of the god Tvashtri, the architect of the universe.
अस्ति त्वत्र नलो नाम वानरः शिल्पिसम्मतः। त्वष्टुर्देवस्य तनयो बलवान् विश्वकर्मणः॥