Bears are pessimistic traders,they see almost everything as a risk.They are the catalysts of FUD - 'Fear, Uncertainty and Despair'.They will not trade on crypto but may occasionally buy HODL - Meaning 'Hold' in crypto which is a term that came from a misspelling on a crypto forum by one of the contributors and wait to see whats happens.
Bulls are optimistic crypto traders,they see almost everything as an opportunity.They openly propagate FOMO - 'Fear of Missing Out' on profit making crypto opportunities.They are huge risk takers commonly know as 'Overly Bullish'. They are frequently REKT - 'Meaning wrecked' when the prices of the crypto they have bought goes down'.
Whales are owners of huge volumes of a particular crypto. They play a key role in determining the price of a crypto. They will HODL and make the price stable,buy and hike the price or sell and dip the price commonly known as 'pumping and dumping'.